The students are asked to prove the purity of copper.

要求学生们检验铜。

The silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打上标记。

The high purity amidinothiourea phosphate (P800) was reacted with the dicyanodiamide and phosphoric acid.

摘要利用双氰胺和磷酸反应得到脒基脲磷酸盐P800。

Results Pure flavonol and flavanonol were obtained by the column chromatography of polyamide.

结果运用聚酰胺柱色谱法一次分离得黄酮醇与二氢黄酮醇。

We can guarantee it pure.

我们可以保证它。

The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.

用萃取法从钨矿渣制得99．99％化钪。

The main products of PET supercritical methanolysis are dimethyl terephthalate(DMT) and ethylene glycol(EG).

红外光谱检测解聚产物是很对苯二甲酸二甲酯（DMT）单体和乙二醇。

The 2,6 dipicrylamino 3,5 dinitro pyridine(PYX)pureness reference material had been certificated by potentiometric method.

用电位定法对2，6-双（苦氨基）-3，5-二硝基吡啶（PYX）标准物质进行测定。

Its advantages include high purity of carotin crystal, low acidity of the oil solution of carotin and stable quality.

本发明获得胡萝卜素晶体，胡萝卜素油溶品酸价低、质量稳定。

Dichlorofluorobenzene is prepared by diazotizating of 2,4-dichloro aniline and substituting of 2,4-dichloro diazo benzene with fluorinion.

在此概述了由2,4-二氯苯胺经过重氮化、置换制得2,4-二氯氟苯生产新工艺,产品达到99。

Therefore,it is important to control strictly reaction conditions for removing cystine's mesoisomer and making L-cystine of high optical purity.

严格控制反应条件，分离除去内消旋胱氨酸是制取光学L-胱氨酸重要措施。

This paper texted the process to prepare metadoxine from vitamine B6 hydrochloric acid salt ,pyroglutamic acid and isoproanol.

本文以维生素B6氯化氢盐、焦谷氨酸和异丙醇原料,固相合成美他多辛,达96.3%。

Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.

用乙酰乙酸乙酯法合成了2-庚酮,总得率58.9%,98.5%.介绍了2-庚酮在相关领域中应用.

The mixture was refined by sodium sulfide and sodium hydroxide to afford an O,O-diethyl thiophosphoryl chloride at a purity of 99%.

该粗品通过精制工艺改进,采用硫化钠和氢化钠混合物进行处理,得到≥99%O,O-二乙基硫代磷酰氯。

The results showed that the purity of Zincite as product was more than 99.6%in according with the requirements of grade A products.

试验结果表明,其产品化锌可达99.6%以上,符合一级品要求。

Recent method of synthesizing 3,5-xylenol is sulpho alkaline fusion of dimethylbenzene,it is a very complicated procedure with serious pollution and low-pure products.

国内目前生产工艺是间二甲苯磺化碱熔法,该方法工艺过程复杂、污染严重,并且产品不。

Through the simple method of CTAB, total DNA of velvetleaf was extracted from sprouts of velvetleaf in which there was a little secondary metabolites.

本研究利用黄酮等次生代谢物未大量合成青麻幼芽材料，采用简化CTAB法提取青麻总DNA，可以获得、产量DNA。

The improvement of the purity of fluorene is not dependent on the removal of acenaphthene and dibenzofuran, but dependent on the separation of other impurities.

芴提主要不是依赖苊、芴去除,而是其它杂质分离。

Etodolac was synthesized with 7-ethyltryptophol and methyl 3-oxopentanoate as the starting materials.Highly pure etodolac was obtained by purifying the crude product with a mixing solvent.

以7-乙基色醇和3-代戊酸甲酯起始原料,以甲醇溶剂,合成了依托酸.采用混合溶剂对粗品进行精制,得到了依托酸.

They are the silent spectators of prakrti (matter or nature), which is composed of three gunas (dispositions): satva, rajas and tamas (steadiness, activity and dullness).

它们是帕克提（物质或自然）无声观众，是由三重根拿斯（部署）组成：萨特瓦，拉杰斯和塔玛斯（坚定性，活跃性和）。

The students are asked to prove the purity of copper.

要求学们检验铜的纯度。

The silver vase had been hallmarked at Birmingham.

这是在伯明翰打上纯度标记的。

The high purity amidinothiourea phosphate (P800) was reacted with the dicyanodiamide and phosphoric acid.

摘要利用双氰胺和磷酸反应得到高纯度脒基脲磷酸盐P800。

Results Pure flavonol and flavanonol were obtained by the column chromatography of polyamide.

结果运用聚酰胺柱色谱法一次分离得高纯度黄酮醇与二氢黄酮醇。

We can guarantee it pure.

我们可保证它的纯度。

The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.

用萃取法从钨矿渣制得纯度为99．99％的氧化钪。

The main products of PET supercritical methanolysis are dimethyl terephthalate(DMT) and ethylene glycol(EG).

红外光谱检测解聚产物是纯度很高的对苯二甲酸二甲酯（DMT）单体和乙二醇。

The 2,6 dipicrylamino 3,5 dinitro pyridine(PYX)pureness reference material had been certificated by potentiometric method.

用电位定法对2，6-双（苦氨基）-3，5-二硝基吡啶（PYX）标准物质的纯度进行测定。

Its advantages include high purity of carotin crystal, low acidity of the oil solution of carotin and stable quality.

本发明获得的胡萝卜素晶体纯度高，胡萝卜素油溶品酸价低、质量稳定。

Dichlorofluorobenzene is prepared by diazotizating of 2,4-dichloro aniline and substituting of 2,4-dichloro diazo benzene with fluorinion.

在此概述了由2,4-二氯苯胺经过重氮化、置换制得2,4-二氯氟苯的产新工艺,产品纯度达到99。

Therefore,it is important to control strictly reaction conditions for removing cystine's mesoisomer and making L-cystine of high optical purity.

严格控制反应条件，分离除去内消旋胱氨酸是制取高光学纯度L-胱氨酸的重要措施。

This paper texted the process to prepare metadoxine from vitamine B6 hydrochloric acid salt ,pyroglutamic acid and isoproanol.

本文素B6氯化氢盐、焦谷氨酸和异丙醇为原料,固相合成美他多辛,纯度达96.3%。

Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.

用乙酰乙酸乙酯法合成了2-庚酮,总得率为58.9%,纯度为98.5%.介绍了2-庚酮在相关领域中的应用.

The mixture was refined by sodium sulfide and sodium hydroxide to afford an O,O-diethyl thiophosphoryl chloride at a purity of 99%.

该粗品通过精制工艺的改进,采用硫化钠和氢氧化钠的混合物进行处理,得到纯度≥99%的O,O-二乙基硫代磷酰氯。

The results showed that the purity of Zincite as product was more than 99.6%in according with the requirements of grade A products.

试验结果表明,其产品氧化锌纯度可达99.6%上,符合一级品的要求。

Recent method of synthesizing 3,5-xylenol is sulpho alkaline fusion of dimethylbenzene,it is a very complicated procedure with serious pollution and low-pure products.

国内目前产工艺是间二甲苯的磺化碱熔法,该方法工艺过程复杂、污染严重,并且产品纯度不高。

Through the simple method of CTAB, total DNA of velvetleaf was extracted from sprouts of velvetleaf in which there was a little secondary metabolites.

本研究利用黄酮等次代谢物未大量合成的青麻幼芽为材料，采用简化CTAB法提取青麻总DNA，可获得高纯度、高产量的DNA。

The improvement of the purity of fluorene is not dependent on the removal of acenaphthene and dibenzofuran, but dependent on the separation of other impurities.

芴纯度的提高主要不是依赖苊、氧芴的去除,而是其它杂质的分离。

Etodolac was synthesized with 7-ethyltryptophol and methyl 3-oxopentanoate as the starting materials.Highly pure etodolac was obtained by purifying the crude product with a mixing solvent.

7-乙基色醇和3-氧代戊酸甲酯为起始原料,甲醇为溶剂,合成了依托度酸.采用混合溶剂对粗品进行精制,得到了高纯度的依托度酸.

They are the silent spectators of prakrti (matter or nature), which is composed of three gunas (dispositions): satva, rajas and tamas (steadiness, activity and dullness).

它们是帕克提（物质或自然）的无声观众，是由三重的根拿斯（部署）组成：萨特瓦，拉杰斯和塔玛斯（坚定性，活跃性和纯度）。

The students are asked to prove the purity of copper.

要求学生们检验铜的纯度。

The silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打上纯度标记的。

The high purity amidinothiourea phosphate (P800) was reacted with the dicyanodiamide and phosphoric acid.

摘要利用双氰胺和磷酸反应得到高纯度脒基脲磷酸盐P800。

Results Pure flavonol and flavanonol were obtained by the column chromatography of polyamide.

结果运用聚酰胺柱色谱法一次分离得高纯度黄酮醇与二氢黄酮醇。

We can guarantee it pure.

我们证它的纯度。

The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.

用萃取法从钨矿渣制得纯度为99．99％的氧化钪。

The main products of PET supercritical methanolysis are dimethyl terephthalate(DMT) and ethylene glycol(EG).

红外光谱检测解聚产物是纯度很高的对苯二甲酸二甲酯（DMT）单体和乙二醇。

The 2,6 dipicrylamino 3,5 dinitro pyridine(PYX)pureness reference material had been certificated by potentiometric method.

用电位定法对2，6-双（苦氨基）-3，5-二硝基吡啶（PYX）标准物质的纯度进行测定。

Its advantages include high purity of carotin crystal, low acidity of the oil solution of carotin and stable quality.

本发明获得的胡萝卜素晶体纯度高，胡萝卜素油溶品酸价低、质量稳定。

Dichlorofluorobenzene is prepared by diazotizating of 2,4-dichloro aniline and substituting of 2,4-dichloro diazo benzene with fluorinion.

在此概2,4-二氯苯胺经过重氮化、置换制得2,4-二氯氟苯的生产新工艺,产品纯度达到99。

Therefore,it is important to control strictly reaction conditions for removing cystine's mesoisomer and making L-cystine of high optical purity.

严格控制反应条件，分离除去内消旋胱氨酸是制取高光学纯度L-胱氨酸的重要措施。

This paper texted the process to prepare metadoxine from vitamine B6 hydrochloric acid salt ,pyroglutamic acid and isoproanol.

本文维生素B6氯化氢盐、焦谷氨酸和异丙醇为原料,固相合成美他多辛,纯度达96.3%。

Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.

用乙酰乙酸乙酯法合成2-庚酮,总得率为58.9%,纯度为98.5%.介绍2-庚酮在相关领域中的应用.

The mixture was refined by sodium sulfide and sodium hydroxide to afford an O,O-diethyl thiophosphoryl chloride at a purity of 99%.

该粗品通过精制工艺的改进,采用硫化钠和氢氧化钠的混合物进行处理,得到纯度≥99%的O,O-二乙基硫代磷酰氯。

The results showed that the purity of Zincite as product was more than 99.6%in according with the requirements of grade A products.

试验结果表明,其产品氧化锌纯度达99.6%上,符合一级品的要求。

Recent method of synthesizing 3,5-xylenol is sulpho alkaline fusion of dimethylbenzene,it is a very complicated procedure with serious pollution and low-pure products.

国内目前生产工艺是间二甲苯的磺化碱熔法,该方法工艺过程复杂、污染严重,并且产品纯度不高。

Through the simple method of CTAB, total DNA of velvetleaf was extracted from sprouts of velvetleaf in which there was a little secondary metabolites.

本研究利用黄酮等次生代谢物未大量合成的青麻幼芽为材料，采用简化CTAB法提取青麻总DNA，获得高纯度、高产量的DNA。

The improvement of the purity of fluorene is not dependent on the removal of acenaphthene and dibenzofuran, but dependent on the separation of other impurities.

芴纯度的提高主要不是依赖苊、氧芴的去除,而是其它杂质的分离。

Etodolac was synthesized with 7-ethyltryptophol and methyl 3-oxopentanoate as the starting materials.Highly pure etodolac was obtained by purifying the crude product with a mixing solvent.

7-乙基色醇和3-氧代戊酸甲酯为起始原料,甲醇为溶剂,合成依托度酸.采用混合溶剂对粗品进行精制,得到高纯度的依托度酸.

They are the silent spectators of prakrti (matter or nature), which is composed of three gunas (dispositions): satva, rajas and tamas (steadiness, activity and dullness).

它们是帕克提（物质或自然）的无声观众，是三重的根拿斯（部署）组成：萨特瓦，拉杰斯和塔玛斯（坚定性，活跃性和纯度）。

The students are asked to prove the purity of copper.

要求学生们检验铜。

The silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打标记。

The high purity amidinothiourea phosphate (P800) was reacted with the dicyanodiamide and phosphoric acid.

摘要利用双氰胺和磷反应得到高脒基脲磷盐P800。

Results Pure flavonol and flavanonol were obtained by the column chromatography of polyamide.

结果运用聚酰胺柱色谱法一次分离得高黄酮醇与二氢黄酮醇。

We can guarantee it pure.

我们可以保证它。

The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.

用萃取法从钨矿渣制得为99．99％氧化钪。

The main products of PET supercritical methanolysis are dimethyl terephthalate(DMT) and ethylene glycol(EG).

红外光谱检测解聚产物是很高对苯二甲二甲酯（DMT）单体和乙二醇。

The 2,6 dipicrylamino 3,5 dinitro pyridine(PYX)pureness reference material had been certificated by potentiometric method.

用电位定法对2，6-双（苦基）-3，5-二硝基吡啶（PYX）标准物质进行测定。

Its advantages include high purity of carotin crystal, low acidity of the oil solution of carotin and stable quality.

本发明获得胡萝卜素晶体高，胡萝卜素油溶品价低、质量稳定。

Dichlorofluorobenzene is prepared by diazotizating of 2,4-dichloro aniline and substituting of 2,4-dichloro diazo benzene with fluorinion.

在此概述了由2,4-二氯苯胺经过重氮化、置换制得2,4-二氯氟苯生产新工艺,产品达到99。

Therefore,it is important to control strictly reaction conditions for removing cystine's mesoisomer and making L-cystine of high optical purity.

严格控制反应条件，分离除去内消旋胱是制取高光学L-胱重要措施。

This paper texted the process to prepare metadoxine from vitamine B6 hydrochloric acid salt ,pyroglutamic acid and isoproanol.

本文以维生素B6氯化氢盐、焦谷和异丙醇为原料,固相合成美他多辛,达96.3%。

Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.

用乙酰乙乙酯法合成了2-庚酮,总得率为58.9%,为98.5%.介绍了2-庚酮在相关领域中应用.

The mixture was refined by sodium sulfide and sodium hydroxide to afford an O,O-diethyl thiophosphoryl chloride at a purity of 99%.

该粗品通过精制工艺改进,采用硫化钠和氢氧化钠混合物进行处理,得到≥99%O,O-二乙基硫代磷酰氯。

The results showed that the purity of Zincite as product was more than 99.6%in according with the requirements of grade A products.

试验结果表明,其产品氧化锌可达99.6%以,符合一级品要求。

Recent method of synthesizing 3,5-xylenol is sulpho alkaline fusion of dimethylbenzene,it is a very complicated procedure with serious pollution and low-pure products.

国内目前生产工艺是间二甲苯磺化碱熔法,该方法工艺过程复杂、污染严重,并且产品不高。

Through the simple method of CTAB, total DNA of velvetleaf was extracted from sprouts of velvetleaf in which there was a little secondary metabolites.

本研究利用黄酮等次生代谢物未大量合成青麻幼芽为材料，采用简化CTAB法提取青麻总DNA，可以获得高、高产量DNA。

The improvement of the purity of fluorene is not dependent on the removal of acenaphthene and dibenzofuran, but dependent on the separation of other impurities.

芴提高主要不是依赖苊、氧芴去除,而是其它杂质分离。

Etodolac was synthesized with 7-ethyltryptophol and methyl 3-oxopentanoate as the starting materials.Highly pure etodolac was obtained by purifying the crude product with a mixing solvent.

以7-乙基色醇和3-氧代戊甲酯为起始原料,以甲醇为溶剂,合成了依托.采用混合溶剂对粗品进行精制,得到了高依托.

They are the silent spectators of prakrti (matter or nature), which is composed of three gunas (dispositions): satva, rajas and tamas (steadiness, activity and dullness).

它们是帕克提（物质或自然）无声观众，是由三重根拿斯（部署）组成：萨特瓦，拉杰斯和塔玛斯（坚定性，活跃性和）。

The students are asked to prove the purity of copper.

要求学生们检验铜的。

The silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打上标记的。

The high purity amidinothiourea phosphate (P800) was reacted with the dicyanodiamide and phosphoric acid.

摘要利双氰胺和磷酸反应得到高脒基脲磷酸盐P800。

Results Pure flavonol and flavanonol were obtained by the column chromatography of polyamide.

结果运聚酰胺柱色谱法一次分离得高黄酮醇与二氢黄酮醇。

We can guarantee it pure.

我们可以保证它的。

The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.

萃取法从钨矿渣制得为99．99％的氧化钪。

The main products of PET supercritical methanolysis are dimethyl terephthalate(DMT) and ethylene glycol(EG).

红外光谱检测解聚产物是很高的对苯二甲酸二甲酯（DMT）单体和乙二醇。

The 2,6 dipicrylamino 3,5 dinitro pyridine(PYX)pureness reference material had been certificated by potentiometric method.

电位法对2，6-双（苦氨基）-3，5-二硝基吡啶（PYX）标准物质的进行测。

Its advantages include high purity of carotin crystal, low acidity of the oil solution of carotin and stable quality.

本发明获得的胡萝卜素晶体高，胡萝卜素油溶品酸价低、质。

Dichlorofluorobenzene is prepared by diazotizating of 2,4-dichloro aniline and substituting of 2,4-dichloro diazo benzene with fluorinion.

在此概述了由2,4-二氯苯胺经过重氮化、置换制得2,4-二氯氟苯的生产新工艺,产品达到99。

Therefore,it is important to control strictly reaction conditions for removing cystine's mesoisomer and making L-cystine of high optical purity.

严格控制反应条件，分离除去内消旋胱氨酸是制取高光学L-胱氨酸的重要措施。

This paper texted the process to prepare metadoxine from vitamine B6 hydrochloric acid salt ,pyroglutamic acid and isoproanol.

本文以维生素B6氯化氢盐、焦谷氨酸和异丙醇为原料,固相合成美他多辛,达96.3%。

Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.

乙酰乙酸乙酯法合成了2-庚酮,总得率为58.9%,为98.5%.介绍了2-庚酮在相关领域中的应.

The mixture was refined by sodium sulfide and sodium hydroxide to afford an O,O-diethyl thiophosphoryl chloride at a purity of 99%.

该粗品通过精制工艺的改进,采硫化钠和氢氧化钠的混合物进行处理,得到≥99%的O,O-二乙基硫代磷酰氯。

The results showed that the purity of Zincite as product was more than 99.6%in according with the requirements of grade A products.

试验结果表明,其产品氧化锌可达99.6%以上,符合一级品的要求。

Recent method of synthesizing 3,5-xylenol is sulpho alkaline fusion of dimethylbenzene,it is a very complicated procedure with serious pollution and low-pure products.

国内目前生产工艺是间二甲苯的磺化碱熔法,该方法工艺过程复杂、污染严重,并且产品不高。

Through the simple method of CTAB, total DNA of velvetleaf was extracted from sprouts of velvetleaf in which there was a little secondary metabolites.

本研究利黄酮等次生代谢物未大合成的青麻幼芽为材料，采简化CTAB法提取青麻总DNA，可以获得高、高产的DNA。

The improvement of the purity of fluorene is not dependent on the removal of acenaphthene and dibenzofuran, but dependent on the separation of other impurities.

芴的提高主要不是依赖苊、氧芴的去除,而是其它杂质的分离。

Etodolac was synthesized with 7-ethyltryptophol and methyl 3-oxopentanoate as the starting materials.Highly pure etodolac was obtained by purifying the crude product with a mixing solvent.

以7-乙基色醇和3-氧代戊酸甲酯为起始原料,以甲醇为溶剂,合成了依托酸.采混合溶剂对粗品进行精制,得到了高的依托酸.

They are the silent spectators of prakrti (matter or nature), which is composed of three gunas (dispositions): satva, rajas and tamas (steadiness, activity and dullness).

它们是帕克提（物质或自然）的无声观众，是由三重的根拿斯（部署）组成：萨特瓦，拉杰斯和塔玛斯（坚性，活跃性和）。

The students are asked to prove the purity of copper.

要求学生们检验铜的纯度。

The silver vase had been hallmarked at Birmingham.

这个银瓶在伯明翰打上纯度标记的。

The high purity amidinothiourea phosphate (P800) was reacted with the dicyanodiamide and phosphoric acid.

摘要利用和磷反应得到高纯度脒基脲磷盐P800。

Results Pure flavonol and flavanonol were obtained by the column chromatography of polyamide.

结果运用聚酰柱色谱法一次分离得高纯度黄酮醇与二氢黄酮醇。

We can guarantee it pure.

我们可以保证它的纯度。

The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.

用萃取法从钨矿渣得纯度为99．99％的氧化钪。

The main products of PET supercritical methanolysis are dimethyl terephthalate(DMT) and ethylene glycol(EG).

红外光谱检测解聚产物纯度很高的对苯二甲二甲酯（DMT）单体和乙二醇。

The 2,6 dipicrylamino 3,5 dinitro pyridine(PYX)pureness reference material had been certificated by potentiometric method.

用电位定法对2，6-（苦氨基）-3，5-二硝基吡啶（PYX）标准物质的纯度进行测定。

Its advantages include high purity of carotin crystal, low acidity of the oil solution of carotin and stable quality.

本发明获得的胡萝卜素晶体纯度高，胡萝卜素油溶品价低、质量稳定。

Dichlorofluorobenzene is prepared by diazotizating of 2,4-dichloro aniline and substituting of 2,4-dichloro diazo benzene with fluorinion.

在此概述了由2,4-二氯苯经过重氮化、置换得2,4-二氯氟苯的生产新工艺,产品纯度达到99。

Therefore,it is important to control strictly reaction conditions for removing cystine's mesoisomer and making L-cystine of high optical purity.

严格控反应条件，分离除去内消旋胱氨取高光学纯度L-胱氨的重要措施。

This paper texted the process to prepare metadoxine from vitamine B6 hydrochloric acid salt ,pyroglutamic acid and isoproanol.

本文以维生素B6氯化氢盐、焦谷氨和异丙醇为原料,固相合成美他多辛,纯度达96.3%。

Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.

用乙酰乙乙酯法合成了2-庚酮,总得率为58.9%,纯度为98.5%.介绍了2-庚酮在相关领域中的应用.

The mixture was refined by sodium sulfide and sodium hydroxide to afford an O,O-diethyl thiophosphoryl chloride at a purity of 99%.

该粗品通过精工艺的改进,采用硫化钠和氢氧化钠的混合物进行处理,得到纯度≥99%的O,O-二乙基硫代磷酰氯。

The results showed that the purity of Zincite as product was more than 99.6%in according with the requirements of grade A products.

试验结果表明,其产品氧化锌纯度可达99.6%以上,符合一级品的要求。

Recent method of synthesizing 3,5-xylenol is sulpho alkaline fusion of dimethylbenzene,it is a very complicated procedure with serious pollution and low-pure products.

国内目前生产工艺间二甲苯的磺化碱熔法,该方法工艺过程复杂、污染严重,并且产品纯度不高。

Through the simple method of CTAB, total DNA of velvetleaf was extracted from sprouts of velvetleaf in which there was a little secondary metabolites.

本研究利用黄酮等次生代谢物未大量合成的青麻幼芽为材料，采用简化CTAB法提取青麻总DNA，可以获得高纯度、高产量的DNA。

The improvement of the purity of fluorene is not dependent on the removal of acenaphthene and dibenzofuran, but dependent on the separation of other impurities.

芴纯度的提高主要不依赖苊、氧芴的去除,而其它杂质的分离。

Etodolac was synthesized with 7-ethyltryptophol and methyl 3-oxopentanoate as the starting materials.Highly pure etodolac was obtained by purifying the crude product with a mixing solvent.

以7-乙基色醇和3-氧代戊甲酯为起始原料,以甲醇为溶剂,合成了依托度.采用混合溶剂对粗品进行精,得到了高纯度的依托度.

They are the silent spectators of prakrti (matter or nature), which is composed of three gunas (dispositions): satva, rajas and tamas (steadiness, activity and dullness).

它们帕克提（物质或自然）的无声观众，由三重的根拿斯（部署）组成：萨特瓦，拉杰斯和塔玛斯（坚定性，活跃性和纯度）。

The students are asked to prove the purity of copper.

要求学生们检验铜。

The silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打上标记。

The high purity amidinothiourea phosphate (P800) was reacted with the dicyanodiamide and phosphoric acid.

摘要利用双氰胺和磷酸反应得到高脒基脲磷酸盐P800。

Results Pure flavonol and flavanonol were obtained by the column chromatography of polyamide.

结果运用聚酰胺柱色谱法一次分离得高黄酮醇与二黄酮醇。

We can guarantee it pure.

我们可以保证它。

The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.

用萃取法从钨矿渣制得为99．99％氧钪。

The main products of PET supercritical methanolysis are dimethyl terephthalate(DMT) and ethylene glycol(EG).

红外光谱检测解聚产物是很高对苯二甲酸二甲酯（DMT）单体和乙二醇。

The 2,6 dipicrylamino 3,5 dinitro pyridine(PYX)pureness reference material had been certificated by potentiometric method.

用电位定法对2，6-双（苦氨基）-3，5-二硝基吡啶（PYX）标准物质进行测定。

Its advantages include high purity of carotin crystal, low acidity of the oil solution of carotin and stable quality.

本发明获得胡萝卜素晶体高，胡萝卜素油溶品酸价低、质量稳定。

Dichlorofluorobenzene is prepared by diazotizating of 2,4-dichloro aniline and substituting of 2,4-dichloro diazo benzene with fluorinion.

在此概述了由2,4-二苯胺经过重氮、置换制得2,4-二氟苯生产新工艺,产品达到99。

Therefore,it is important to control strictly reaction conditions for removing cystine's mesoisomer and making L-cystine of high optical purity.

严格控制反应条件，分离除去内消旋胱氨酸是制取高光学L-胱氨酸重要措施。

This paper texted the process to prepare metadoxine from vitamine B6 hydrochloric acid salt ,pyroglutamic acid and isoproanol.

本文以维生素B6盐、焦谷氨酸和异丙醇为原料,固相合成美他多辛,达96.3%。

Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.

用乙酰乙酸乙酯法合成了2-庚酮,总得率为58.9%,为98.5%.介绍了2-庚酮在相关领域中应用.

The mixture was refined by sodium sulfide and sodium hydroxide to afford an O,O-diethyl thiophosphoryl chloride at a purity of 99%.

该粗品通过精制工艺改进,采用硫钠和氧钠混合物进行处理,得到≥99%O,O-二乙基硫代磷酰。

The results showed that the purity of Zincite as product was more than 99.6%in according with the requirements of grade A products.

试验结果表明,其产品氧锌可达99.6%以上,符合一级品要求。

Recent method of synthesizing 3,5-xylenol is sulpho alkaline fusion of dimethylbenzene,it is a very complicated procedure with serious pollution and low-pure products.

国内目前生产工艺是间二甲苯磺碱熔法,该方法工艺过程复杂、污染严重,并且产品不高。

Through the simple method of CTAB, total DNA of velvetleaf was extracted from sprouts of velvetleaf in which there was a little secondary metabolites.

本研究利用黄酮等次生代谢物未大量合成青麻幼芽为材料，采用简CTAB法提取青麻总DNA，可以获得高、高产量DNA。

The improvement of the purity of fluorene is not dependent on the removal of acenaphthene and dibenzofuran, but dependent on the separation of other impurities.

芴提高主要不是依赖苊、氧芴去除,而是其它杂质分离。

Etodolac was synthesized with 7-ethyltryptophol and methyl 3-oxopentanoate as the starting materials.Highly pure etodolac was obtained by purifying the crude product with a mixing solvent.

以7-乙基色醇和3-氧代戊酸甲酯为起始原料,以甲醇为溶剂,合成了依托酸.采用混合溶剂对粗品进行精制,得到了高依托酸.

They are the silent spectators of prakrti (matter or nature), which is composed of three gunas (dispositions): satva, rajas and tamas (steadiness, activity and dullness).

它们是帕克提（物质或自然）无声观众，是由三重根拿斯（部署）组成：萨特瓦，拉杰斯和塔玛斯（坚定性，活跃性和）。

The students are asked to prove the purity of copper.

要求学们检验铜纯度。

The silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打上纯度标记。

The high purity amidinothiourea phosphate (P800) was reacted with the dicyanodiamide and phosphoric acid.

摘要利用双氰胺和磷酸反应得到高纯度脒基脲磷酸盐P800。

Results Pure flavonol and flavanonol were obtained by the column chromatography of polyamide.

结果运用聚酰胺柱色谱法分离得高纯度黄酮醇与二氢黄酮醇。

We can guarantee it pure.

我们可以保证它纯度。

The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.

用萃取法从钨矿渣制得纯度为99．99％氧化钪。

The main products of PET supercritical methanolysis are dimethyl terephthalate(DMT) and ethylene glycol(EG).

红外光谱检测解聚物是纯度很高对苯二甲酸二甲酯（DMT）单体和乙二醇。

The 2,6 dipicrylamino 3,5 dinitro pyridine(PYX)pureness reference material had been certificated by potentiometric method.

用电位定法对2，6-双（苦氨基）-3，5-二硝基吡啶（PYX）标准物质纯度进行测定。

Its advantages include high purity of carotin crystal, low acidity of the oil solution of carotin and stable quality.

本发明获得胡萝卜素晶体纯度高，胡萝卜素油溶品酸价低、质量稳定。

Dichlorofluorobenzene is prepared by diazotizating of 2,4-dichloro aniline and substituting of 2,4-dichloro diazo benzene with fluorinion.

在此概述了由2,4-二氯苯胺经过重氮化、置换制得2,4-二氯氟苯新工艺,品纯度达到99。

Therefore,it is important to control strictly reaction conditions for removing cystine's mesoisomer and making L-cystine of high optical purity.

严格控制反应条件，分离除去内消旋胱氨酸是制取高光学纯度L-胱氨酸重要措施。

This paper texted the process to prepare metadoxine from vitamine B6 hydrochloric acid salt ,pyroglutamic acid and isoproanol.

本文以维素B6氯化氢盐、焦谷氨酸和异丙醇为原料,固相合成美他多辛,纯度达96.3%。

Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.

用乙酰乙酸乙酯法合成了2-庚酮,总得率为58.9%,纯度为98.5%.介绍了2-庚酮在相关领域中应用.

The mixture was refined by sodium sulfide and sodium hydroxide to afford an O,O-diethyl thiophosphoryl chloride at a purity of 99%.

该粗品通过精制工艺改进,采用硫化钠和氢氧化钠混合物进行处理,得到纯度≥99%O,O-二乙基硫代磷酰氯。

The results showed that the purity of Zincite as product was more than 99.6%in according with the requirements of grade A products.

试验结果表明,其品氧化锌纯度可达99.6%以上,符合级品要求。

Recent method of synthesizing 3,5-xylenol is sulpho alkaline fusion of dimethylbenzene,it is a very complicated procedure with serious pollution and low-pure products.

国内目前工艺是间二甲苯磺化碱熔法,该方法工艺过程复杂、污染严重,并且品纯度不高。

Through the simple method of CTAB, total DNA of velvetleaf was extracted from sprouts of velvetleaf in which there was a little secondary metabolites.

本研究利用黄酮等代谢物未大量合成青麻幼芽为材料，采用简化CTAB法提取青麻总DNA，可以获得高纯度、高量DNA。

The improvement of the purity of fluorene is not dependent on the removal of acenaphthene and dibenzofuran, but dependent on the separation of other impurities.

芴纯度提高主要不是依赖苊、氧芴去除,而是其它杂质分离。

Etodolac was synthesized with 7-ethyltryptophol and methyl 3-oxopentanoate as the starting materials.Highly pure etodolac was obtained by purifying the crude product with a mixing solvent.

以7-乙基色醇和3-氧代戊酸甲酯为起始原料,以甲醇为溶剂,合成了依托度酸.采用混合溶剂对粗品进行精制,得到了高纯度依托度酸.

They are the silent spectators of prakrti (matter or nature), which is composed of three gunas (dispositions): satva, rajas and tamas (steadiness, activity and dullness).

它们是帕克提（物质或自然）无声观众，是由三重根拿斯（部署）组成：萨特瓦，拉杰斯和塔玛斯（坚定性，活跃性和纯度）。

The students are asked to prove the purity of copper.

要求学生们检验铜的纯度。

The silver vase had been hallmarked at Birmingham.

这个银瓶明翰打上纯度标记的。

The high purity amidinothiourea phosphate (P800) was reacted with the dicyanodiamide and phosphoric acid.

摘要利用双氰胺和磷酸反应得到高纯度脒基脲磷酸盐P800。

Results Pure flavonol and flavanonol were obtained by the column chromatography of polyamide.

结果运用聚酰胺柱色谱法一次分离得高纯度黄酮醇与二氢黄酮醇。

We can guarantee it pure.

我们可以保证它的纯度。

The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.

用萃取法从钨矿渣制得纯度为99．99％的氧化钪。

The main products of PET supercritical methanolysis are dimethyl terephthalate(DMT) and ethylene glycol(EG).

红外光谱检测解聚产物纯度很高的对苯二甲酸二甲酯（DMT）单体和乙二醇。

The 2,6 dipicrylamino 3,5 dinitro pyridine(PYX)pureness reference material had been certificated by potentiometric method.

用电位定法对2，6-双（苦氨基）-3，5-二硝基吡啶（PYX）标准物质的纯度进行测定。

Its advantages include high purity of carotin crystal, low acidity of the oil solution of carotin and stable quality.

发明获得的胡萝卜素晶体纯度高，胡萝卜素油溶品酸价低、质量稳定。

Dichlorofluorobenzene is prepared by diazotizating of 2,4-dichloro aniline and substituting of 2,4-dichloro diazo benzene with fluorinion.

此概述了由2,4-二氯苯胺经过重氮化、置换制得2,4-二氯氟苯的生产新工艺,产品纯度达到99。

Therefore,it is important to control strictly reaction conditions for removing cystine's mesoisomer and making L-cystine of high optical purity.

严格控制反应条件，分离除去内消旋胱氨酸制取高光学纯度L-胱氨酸的重要措。

This paper texted the process to prepare metadoxine from vitamine B6 hydrochloric acid salt ,pyroglutamic acid and isoproanol.

以维生素B6氯化氢盐、焦谷氨酸和异丙醇为原料,固相合成美他多辛,纯度达96.3%。

Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.

用乙酰乙酸乙酯法合成了2-庚酮,总得率为58.9%,纯度为98.5%.介绍了2-庚酮相关领域中的应用.

The mixture was refined by sodium sulfide and sodium hydroxide to afford an O,O-diethyl thiophosphoryl chloride at a purity of 99%.

该粗品通过精制工艺的改进,采用硫化钠和氢氧化钠的混合物进行处理,得到纯度≥99%的O,O-二乙基硫代磷酰氯。

The results showed that the purity of Zincite as product was more than 99.6%in according with the requirements of grade A products.

试验结果表明,其产品氧化锌纯度可达99.6%以上,符合一级品的要求。

Recent method of synthesizing 3,5-xylenol is sulpho alkaline fusion of dimethylbenzene,it is a very complicated procedure with serious pollution and low-pure products.

国内目前生产工艺间二甲苯的磺化碱熔法,该方法工艺过程复杂、污染严重,并且产品纯度不高。

Through the simple method of CTAB, total DNA of velvetleaf was extracted from sprouts of velvetleaf in which there was a little secondary metabolites.

研究利用黄酮等次生代谢物未大量合成的青麻幼芽为材料，采用简化CTAB法提取青麻总DNA，可以获得高纯度、高产量的DNA。

The improvement of the purity of fluorene is not dependent on the removal of acenaphthene and dibenzofuran, but dependent on the separation of other impurities.

芴纯度的提高主要不依赖苊、氧芴的去除,而其它杂质的分离。

Etodolac was synthesized with 7-ethyltryptophol and methyl 3-oxopentanoate as the starting materials.Highly pure etodolac was obtained by purifying the crude product with a mixing solvent.

以7-乙基色醇和3-氧代戊酸甲酯为起始原料,以甲醇为溶剂,合成了依托度酸.采用混合溶剂对粗品进行精制,得到了高纯度的依托度酸.

They are the silent spectators of prakrti (matter or nature), which is composed of three gunas (dispositions): satva, rajas and tamas (steadiness, activity and dullness).

它们帕克提（物质或自然）的无声观众，由三重的根拿斯（部署）组成：萨特瓦，拉杰斯和塔玛斯（坚定性，活跃性和纯度）。

The students are asked to prove the purity of copper.

要求学生检验铜的纯度。

The silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打上纯度标记的。

The high purity amidinothiourea phosphate (P800) was reacted with the dicyanodiamide and phosphoric acid.

摘要利用双氰胺和磷酸反应得到高纯度脒基脲磷酸盐P800。

Results Pure flavonol and flavanonol were obtained by the column chromatography of polyamide.

结果运用聚酰胺柱色谱法一次分离得高纯度黄酮醇与氢黄酮醇。

We can guarantee it pure.

以保证它的纯度。

The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.

用萃取法从钨矿渣制得纯度为99．99％的氧化钪。

The main products of PET supercritical methanolysis are dimethyl terephthalate(DMT) and ethylene glycol(EG).

红外光谱检测解聚产物是纯度很高的对苯甲酸甲酯（DMT）单体和乙醇。

The 2,6 dipicrylamino 3,5 dinitro pyridine(PYX)pureness reference material had been certificated by potentiometric method.

用电位定法对2，6-双（苦氨基）-3，5-硝基吡啶（PYX）标准物质的纯度进行测定。

Its advantages include high purity of carotin crystal, low acidity of the oil solution of carotin and stable quality.

本发明获得的胡萝卜素晶体纯度高，胡萝卜素油溶品酸价低、质量稳定。

Dichlorofluorobenzene is prepared by diazotizating of 2,4-dichloro aniline and substituting of 2,4-dichloro diazo benzene with fluorinion.

在此概述了2,4-苯胺经过重氮化、置换制得2,4-氟苯的生产新工艺,产品纯度达到99。

Therefore,it is important to control strictly reaction conditions for removing cystine's mesoisomer and making L-cystine of high optical purity.

严格控制反应条件，分离除去内消旋胱氨酸是制取高光学纯度L-胱氨酸的重要措施。

This paper texted the process to prepare metadoxine from vitamine B6 hydrochloric acid salt ,pyroglutamic acid and isoproanol.

本文以维生素B6化氢盐、焦谷氨酸和异丙醇为原料,固相合成美他多辛,纯度达96.3%。

Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.

用乙酰乙酸乙酯法合成了2-庚酮,总得率为58.9%,纯度为98.5%.介绍了2-庚酮在相关领域中的应用.

The mixture was refined by sodium sulfide and sodium hydroxide to afford an O,O-diethyl thiophosphoryl chloride at a purity of 99%.

该粗品通过精制工艺的改进,采用硫化钠和氢氧化钠的混合物进行处理,得到纯度≥99%的O,O-乙基硫代磷酰。

The results showed that the purity of Zincite as product was more than 99.6%in according with the requirements of grade A products.

试验结果表明,其产品氧化锌纯度达99.6%以上,符合一级品的要求。

Recent method of synthesizing 3,5-xylenol is sulpho alkaline fusion of dimethylbenzene,it is a very complicated procedure with serious pollution and low-pure products.

国内目前生产工艺是间甲苯的磺化碱熔法,该方法工艺过程复杂、污染严重,并且产品纯度不高。

Through the simple method of CTAB, total DNA of velvetleaf was extracted from sprouts of velvetleaf in which there was a little secondary metabolites.

本研究利用黄酮等次生代谢物未大量合成的青麻幼芽为材料，采用简化CTAB法提取青麻总DNA，以获得高纯度、高产量的DNA。

The improvement of the purity of fluorene is not dependent on the removal of acenaphthene and dibenzofuran, but dependent on the separation of other impurities.

芴纯度的提高主要不是依赖苊、氧芴的去除,而是其它杂质的分离。

Etodolac was synthesized with 7-ethyltryptophol and methyl 3-oxopentanoate as the starting materials.Highly pure etodolac was obtained by purifying the crude product with a mixing solvent.

以7-乙基色醇和3-氧代戊酸甲酯为起始原料,以甲醇为溶剂,合成了依托度酸.采用混合溶剂对粗品进行精制,得到了高纯度的依托度酸.

They are the silent spectators of prakrti (matter or nature), which is composed of three gunas (dispositions): satva, rajas and tamas (steadiness, activity and dullness).

它是帕克提（物质或自然）的无声观众，是三重的根拿斯（部署）组成：萨特瓦，拉杰斯和塔玛斯（坚定性，活跃性和纯度）。