The students are asked to prove the purity of copper.

要求学生们检验铜的纯度。

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。

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

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

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 silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打上纯度标记的。

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。

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,产品纯度达到99。

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,固相他多辛,纯度达96.3%。

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。

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。

We can guarantee it pure.

我们可以保证它的纯度。

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物进行处理,得到纯度≥99%的O,O-二乙基硫代磷酰氯。

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.

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。

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,符一级品的要求。

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,了依托度酸.采用混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：萨特瓦，拉杰斯和塔玛斯（坚性，活跃性和纯度）。

The students are asked to prove the purity of copper.

要求学生们检验铜纯。

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纯脒基脲磷酸盐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纯黄酮醇与二氢黄酮醇。

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

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

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对二甲酸二甲酯（DMT）单体和乙二醇。

The silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打上纯标记。

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为99．99％氧化钪。

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2,4-二氯胺经过重氮化、置换制得2,4-二氯生产新工艺,产品纯达到99。

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,纯达96.3%。

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，胡萝卜素油溶品酸价低、质量稳定。

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纯L-胱氨酸重要措施。

We can guarantee it pure.

我们可以保证它纯。

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≥99%O,O-二乙基硫代磷酰氯。

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%,纯为98.5%.介绍了2-庚酮在相关领域中应用.

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磺化碱熔法,该方法工艺过程复杂、污染严重,并且产品纯不。

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,其产品氧化锌纯可达99.6%以上,符合一级品要求。

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，可以获得纯、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.

芴纯提主要不是依赖苊、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,得到了纯依托酸.

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，活跃性和纯）。

The students are asked to prove the purity of copper.

要求学生检验铜的纯度。

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。

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

用电位滴定法对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。

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 silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打上纯度标记的。

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。

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,产品纯度达到99。

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,纯度达96.3%。

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。

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。

We can guarantee it pure.

可以保证它的纯度。

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。

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.

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。

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。

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 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.

结果运聚酰胺柱色谱法一次分离得高纯度黄酮醇与二氢黄酮醇。

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

滴定法对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。

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 silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打上纯度标记的。

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纯度为99．99％的氧化钪。

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,产品纯度达到99。

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,固相合成辛,纯度达96.3%。

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。

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。

We can guarantee it pure.

我们可以保证它的纯度。

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,得到纯度≥99%的O,O-二乙基硫代磷酰氯。

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%,纯度为98.5%.介绍了2-庚酮在相关领域中的应.

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。

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。

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量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。

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黄酮醇与二氢黄酮醇。

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

用电位滴法对2，6-双（苦氨）-3，5-二硝吡啶（PYX）标准物质的纯进行测。

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很高的对苯二甲酸二甲酯（DMT）单体和乙二醇。

The silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打上纯标记的。

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为99．99％的氧化钪。

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,产品纯达到99。

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,纯达96.3%。

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高，胡萝卜素油溶品酸价低、质量稳。

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

控制反应条件，分离除去内消旋胱氨酸是制取高光学纯L-胱氨酸的重要措施。

We can guarantee it pure.

我们可以保证它的纯。

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≥99%的O,O-二乙硫代磷酰氯。

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%,纯为98.5%.介绍了2-庚酮在相关领域中的应用.

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、污染重,并且产品纯不高。

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,其产品氧化锌纯可达99.6%以上,符合一级品的要求。

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、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,得到了高纯的依托酸.

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，活跃性和纯）。

The students are asked to prove the purity of copper.

要求学生们检验铜的纯度。

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。

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

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

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

红外光谱检测解聚产是纯度很高的对苯二甲酸二甲酯（DMT）单体和乙二醇。

The silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打上纯度记的。

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。

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,产品纯度达到99。

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、氨酸和异丙醇为原料,固相合成美他多辛,纯度达96.3%。

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。

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。

We can guarantee it pure.

我们可以保证它的纯度。

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进行处理,得到纯度≥99%的O,O-二乙基硫代磷酰氯。

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.

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。

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。

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).

它们是帕克提（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 high purity amidinothiourea phosphate (P800) was reacted with the dicyanodiamide and phosphoric acid.

摘要利用双氰胺和应得到高纯度脒基脲盐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得高纯度黄酮醇与二氢黄酮醇。

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

用电位滴定法对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。

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二甲酯（DMT）单体和乙二醇。

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 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。

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,产品纯度达到99。

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%。

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。

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

严格控制应条件，除去内消旋胱氨是制取高光学纯度L-胱氨的重要措施。

We can guarantee it pure.

我们可以保证它的纯度。

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-二乙基硫代酰氯。

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.

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。

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。

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是依赖苊、氧芴的去除,而是其它杂质的。

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制,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 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。

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

用电位滴定法对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。

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 silver vase had been hallmarked at Birmingham.

这个在伯明翰打上纯度标记的。

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。

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

在了由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。

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,纯度达96.3%。

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。

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-胱氨酸的重要措施。

We can guarantee it pure.

我们可以保证它的纯度。

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。

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.

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。

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。

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.

要求学生们检验铜的纯度。

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

摘要利用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。

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

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

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 silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打上纯度标记的。

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99．99％的氧化钪。

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,产品纯度达到99。

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、焦谷酸和异丙醇,固相合成美他多辛,纯度达96.3%。

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。

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，分离除去内消旋胱酸是制取高光学纯度L-胱酸的重要措施。

We can guarantee it pure.

我们可以保证它的纯度。

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。

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%,纯度98.5%.介绍了2-庚酮在相关领域中的应用.

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。

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。

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材，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-氧代戊酸甲酯起始,以甲醇溶剂,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）。