Semimetallic chemical element, chemical symbol B, atomic number 5.

半金属的元素，符号B，原子序数5。

Dyes come from plants or from chemicals.

染料是从植物物质中得来的。

These chemicals are practically insoluble in water.

这些物质几乎不溶于水。

As chemical reagent and corrodent of integrated plate.

作试剂和集成电路电镀板的消蚀剂。

The same water was reused after chemical treatment.

原来的水经过处理之后再度使用。

Chemicals are used to keep the insects down.

药用于阻止昆虫滋生。

Have you studied the composition of the chemicals?

你研究过这种药的成分了吗?

Choice having introduced the hammerhead and cleading chemical composition.

介绍了锤头和衬板成分的选择。

What are the chemical reaction characteristics of tropane alkaloids?

氢溴酸东莨菪碱的鉴别原理是什么？

The chemical fertilizer should be well dug in.

肥料应该均匀地混入土壤中。

Chemical modification including oxygenation, esterify, graft copolymerization and so on.

改性主要有氧、交联、酯和接枝共聚。

The chemical must be salted out and allowed to dry.

必须把这种物质加盐分离出来并让它变干。

We put chemicals in test tubes in our chemistry class.

我们上课时把药放进试管里。

The soil has been poisoned with chemical waste from the factory.

土壤被从工厂排出的废料污染了。

The heat brings about a chemical reaction, and oxygen is liberated.

热量引起反应, 释放出氧气。

A catalyst is a substance which speeds up a chemical reaction.

催剂是一种能加速反应的物质。

The fission of the cell could be inhibited with certain chemicals.

细胞的裂变可以通过某些药加以抑。

Chemicals in the body break our food down into useful substances.

人体中的元素把食物分解成有用的物质。

Certain chemicals are easily absorbed into the bloodstream, while others are not.

某些药很容易溶于血液, 有些则不行。

The explosion of the chemical plant has poisoned many local residents.

那座工厂的爆炸毒死了许多当地居民。

Semimetallic chemical element, chemical symbol B, atomic number 5.

半金属的化学元素，化学符号B，原子序数5。

Dyes come from plants or from chemicals.

染料是从植物化学物质中得来的。

These chemicals are practically insoluble in water.

这些化学物质几乎不溶于水。

As chemical reagent and corrodent of integrated plate.

作化学试剂和集成电路电镀板的消蚀剂。

The same water was reused after chemical treatment.

原来的水经过化学处理之后再度使用。

Chemicals are used to keep the insects down.

化学药品用于阻止昆虫滋。

Have you studied the composition of the chemicals?

你研究过这种药品的成分了吗?

Choice having introduced the hammerhead and cleading chemical composition.

介绍了锤头和衬板化学成分的选择。

What are the chemical reaction characteristics of tropane alkaloids?

氢溴酸东莨菪碱的鉴别原理是什么？

The chemical fertilizer should be well dug in.

化学肥料应该均匀地混入土壤中。

Chemical modification including oxygenation, esterify, graft copolymerization and so on.

化学改性主要有氧化、交联、酯化和接枝共聚。

The chemical must be salted out and allowed to dry.

必须把这种化学物质加盐分离出来并让它变干。

We put chemicals in test tubes in our chemistry class.

我们上化学课时把化学药品放进试管里。

The soil has been poisoned with chemical waste from the factory.

土壤被从工厂排出的化学废料污染了。

The heat brings about a chemical reaction, and oxygen is liberated.

热量引起化学反应, 释放出氧气。

A catalyst is a substance which speeds up a chemical reaction.

催化剂是一种能加速化学反应的物质。

The fission of the cell could be inhibited with certain chemicals.

细胞的裂变可以通过某些化学药品加以抑制。

Chemicals in the body break our food down into useful substances.

人体中的化学元素把食物分解成有用的物质。

Certain chemicals are easily absorbed into the bloodstream, while others are not.

某些化学药品很容易溶于血液, 有些则不行。

The explosion of the chemical plant has poisoned many local residents.

那座化工厂的爆炸毒死了许多当地居民。

Semimetallic chemical element, chemical symbol B, atomic number 5.

半金属的元素，符号B，原子序数5。

Dyes come from plants or from chemicals.

染料是从植物物质中得来的。

These chemicals are practically insoluble in water.

这些物质几乎不溶于水。

As chemical reagent and corrodent of integrated plate.

作试剂和集成电路电镀板的消蚀剂。

The same water was reused after chemical treatment.

原来的水经过处理之后再度使用。

Chemicals are used to keep the insects down.

药用于阻止昆虫滋生。

Have you studied the composition of the chemicals?

你研究过这种药的成分了吗?

Choice having introduced the hammerhead and cleading chemical composition.

介绍了锤头和衬板成分的选择。

What are the chemical reaction characteristics of tropane alkaloids?

氢溴酸东莨菪碱的鉴别原理是什么？

The chemical fertilizer should be well dug in.

肥料应该均匀地混入土壤中。

Chemical modification including oxygenation, esterify, graft copolymerization and so on.

改性主要有氧、交联、酯和接枝共聚。

The chemical must be salted out and allowed to dry.

必须把这种物质加盐分离出来并让它变干。

We put chemicals in test tubes in our chemistry class.

我们上课时把药放进试管里。

The soil has been poisoned with chemical waste from the factory.

土壤被从工厂排出的废料污染了。

The heat brings about a chemical reaction, and oxygen is liberated.

热量引起反应, 释放出氧气。

A catalyst is a substance which speeds up a chemical reaction.

催剂是一种能加速反应的物质。

The fission of the cell could be inhibited with certain chemicals.

细胞的裂变可以通过某些药加以抑制。

Chemicals in the body break our food down into useful substances.

人体中的元素把食物分解成有用的物质。

Certain chemicals are easily absorbed into the bloodstream, while others are not.

某些药很容易溶于血液, 有些则不行。

The explosion of the chemical plant has poisoned many local residents.

那座工厂的爆炸毒死了许多当地居民。

Semimetallic chemical element, chemical symbol B, atomic number 5.

半金属的元素，符号B，原子序数5。

Dyes come from plants or from chemicals.

染料是从植物物质中得来的。

These chemicals are practically insoluble in water.

这些物质几乎不溶于水。

As chemical reagent and corrodent of integrated plate.

作试剂和集成电路电镀板的消蚀剂。

The same water was reused after chemical treatment.

原来的水经过处理之后再度使用。

Chemicals are used to keep the insects down.

药品用于阻止昆虫滋生。

Have you studied the composition of the chemicals?

你研究过这种药品的成分了吗?

Choice having introduced the hammerhead and cleading chemical composition.

介绍了锤头和衬板成分的选择。

What are the chemical reaction characteristics of tropane alkaloids?

氢溴酸东莨菪碱的鉴别原理是什么？

The chemical fertilizer should be well dug in.

肥料应该均匀地混入土壤中。

Chemical modification including oxygenation, esterify, graft copolymerization and so on.

改性主要有氧、交联、酯和接枝共聚。

The chemical must be salted out and allowed to dry.

必须把这种物质加盐分离出来并让它变干。

We put chemicals in test tubes in our chemistry class.

我们上课时把药品放进试管里。

The soil has been poisoned with chemical waste from the factory.

土壤被从工厂排出的废料污染了。

The heat brings about a chemical reaction, and oxygen is liberated.

热量引起应, 释放出氧气。

A catalyst is a substance which speeds up a chemical reaction.

催剂是一种能加速应的物质。

The fission of the cell could be inhibited with certain chemicals.

细胞的裂变以通过某些药品加以抑制。

Chemicals in the body break our food down into useful substances.

人体中的元素把食物分解成有用的物质。

Certain chemicals are easily absorbed into the bloodstream, while others are not.

某些药品很容易溶于血液, 有些则不行。

The explosion of the chemical plant has poisoned many local residents.

那座工厂的爆炸毒死了许多当地居民。

Semimetallic chemical element, chemical symbol B, atomic number 5.

半金属的元素，符号B，原子序数5。

Dyes come from plants or from chemicals.

染料是从植物物质中得来的。

These chemicals are practically insoluble in water.

这些物质几乎不溶于水。

As chemical reagent and corrodent of integrated plate.

作试剂和集成电路电镀板的消蚀剂。

The same water was reused after chemical treatment.

原来的水经过处理之后再度使。

Chemicals are used to keep the insects down.

药品于阻止昆虫滋生。

Have you studied the composition of the chemicals?

你研究过这种药品的成分了吗?

Choice having introduced the hammerhead and cleading chemical composition.

介绍了锤头和衬板成分的选择。

What are the chemical reaction characteristics of tropane alkaloids?

氢溴酸东莨菪碱的鉴别原理是什么？

The chemical fertilizer should be well dug in.

肥料应该均匀地混入土壤中。

Chemical modification including oxygenation, esterify, graft copolymerization and so on.

改性主要有氧、交联、酯和接枝共聚。

The chemical must be salted out and allowed to dry.

必须把这种物质加盐分离出来并让它变干。

We put chemicals in test tubes in our chemistry class.

我们上课时把药品放进试管里。

The soil has been poisoned with chemical waste from the factory.

土壤被从工厂排出的废料污染了。

The heat brings about a chemical reaction, and oxygen is liberated.

热量引起反应, 释放出氧气。

A catalyst is a substance which speeds up a chemical reaction.

催剂是一种能加速反应的物质。

The fission of the cell could be inhibited with certain chemicals.

细胞的裂变可以过某些药品加以抑制。

Chemicals in the body break our food down into useful substances.

人体中的元素把食物分解成有的物质。

Certain chemicals are easily absorbed into the bloodstream, while others are not.

某些药品很容易溶于血液, 有些则不行。

The explosion of the chemical plant has poisoned many local residents.

那座工厂的爆炸毒死了许多当地居民。

Semimetallic chemical element, chemical symbol B, atomic number 5.

半金属的元素，符号B，原子序数5。

Dyes come from plants or from chemicals.

染料是从植物物质中得来的。

These chemicals are practically insoluble in water.

这些物质几乎不溶于水。

As chemical reagent and corrodent of integrated plate.

作试剂和集成电路电镀板的消蚀剂。

The same water was reused after chemical treatment.

原来的水经过处理之后再度使用。

Chemicals are used to keep the insects down.

药品用于阻止昆虫滋生。

Have you studied the composition of the chemicals?

你研究过这种药品的成分了吗?

Choice having introduced the hammerhead and cleading chemical composition.

介绍了锤头和衬板成分的选择。

What are the chemical reaction characteristics of tropane alkaloids?

氢溴酸东莨菪碱的鉴别原理是什么？

The chemical fertilizer should be well dug in.

肥料应该均匀地混入土壤中。

Chemical modification including oxygenation, esterify, graft copolymerization and so on.

改性主要有氧、交联、酯和接枝共聚。

The chemical must be salted out and allowed to dry.

必须把这种物质加盐分离出来并让它变干。

We put chemicals in test tubes in our chemistry class.

我们课时把药品放进试管里。

The soil has been poisoned with chemical waste from the factory.

土壤被从工厂排出的废料污染了。

The heat brings about a chemical reaction, and oxygen is liberated.

热量引起反应, 释放出氧气。

A catalyst is a substance which speeds up a chemical reaction.

催剂是一种能加速反应的物质。

The fission of the cell could be inhibited with certain chemicals.

细胞的裂变可以通过某些药品加以抑制。

Chemicals in the body break our food down into useful substances.

人体中的元素把食物分解成有用的物质。

Certain chemicals are easily absorbed into the bloodstream, while others are not.

某些药品很容易溶于血液, 有些则不行。

The explosion of the chemical plant has poisoned many local residents.

那座工厂的爆炸毒死了许多当地居民。

Semimetallic chemical element, chemical symbol B, atomic number 5.

半金属的化元素，化符号B，原子序数5。

Dyes come from plants or from chemicals.

染料是从植物化物质中得来的。

These chemicals are practically insoluble in water.

这些化物质几乎不溶于水。

As chemical reagent and corrodent of integrated plate.

作化试剂和集成电路电镀板的消蚀剂。

The same water was reused after chemical treatment.

原来的水经化处理之后再度使。

Chemicals are used to keep the insects down.

化药品于阻止昆虫滋生。

Have you studied the composition of the chemicals?

你研究这种药品的成分了吗?

Choice having introduced the hammerhead and cleading chemical composition.

介绍了锤头和衬板化成分的选择。

What are the chemical reaction characteristics of tropane alkaloids?

氢溴酸东莨菪碱的鉴别原理是什么？

The chemical fertilizer should be well dug in.

化肥料应该均匀地混入土壤中。

Chemical modification including oxygenation, esterify, graft copolymerization and so on.

化改性主要有氧化、交联、酯化和接枝共聚。

The chemical must be salted out and allowed to dry.

必须把这种化物质加盐分离出来并让它变干。

We put chemicals in test tubes in our chemistry class.

我们上化课时把化药品放进试管里。

The soil has been poisoned with chemical waste from the factory.

土壤被从工厂排出的化废料污染了。

The heat brings about a chemical reaction, and oxygen is liberated.

热量引起化反应, 释放出氧气。

A catalyst is a substance which speeds up a chemical reaction.

催化剂是一种能加速化反应的物质。

The fission of the cell could be inhibited with certain chemicals.

细胞的裂变可以通某些化药品加以抑制。

Chemicals in the body break our food down into useful substances.

人体中的化元素把食物分解成有的物质。

Certain chemicals are easily absorbed into the bloodstream, while others are not.

某些化药品很容易溶于血液, 有些则不行。

The explosion of the chemical plant has poisoned many local residents.

那座化工厂的爆炸毒死了许多当地居民。

Semimetallic chemical element, chemical symbol B, atomic number 5.

半金属元素，符号B，原子序数5。

Dyes come from plants or from chemicals.

染料是从植质中得来。

These chemicals are practically insoluble in water.

这些质几乎不溶于水。

As chemical reagent and corrodent of integrated plate.

作试剂和集成电路电镀板消蚀剂。

The same water was reused after chemical treatment.

原来水经过处理之后再度使用。

Chemicals are used to keep the insects down.

药品用于阻止昆虫滋生。

Have you studied the composition of the chemicals?

你研究过这种药品成分了吗?

Choice having introduced the hammerhead and cleading chemical composition.

介绍了锤头和衬板成分选择。

What are the chemical reaction characteristics of tropane alkaloids?

氢溴酸东莨菪碱鉴别原理是什么？

The chemical fertilizer should be well dug in.

肥料应该均匀地混入土壤中。

Chemical modification including oxygenation, esterify, graft copolymerization and so on.

改性主要有氧、交联、酯和接枝共聚。

The chemical must be salted out and allowed to dry.

必须把这种质加盐分离出来并让它变干。

We put chemicals in test tubes in our chemistry class.

我们上课时把药品放进试管里。

The soil has been poisoned with chemical waste from the factory.

土壤被从厂排出废料污染了。

The heat brings about a chemical reaction, and oxygen is liberated.

热量引起反应, 释放出氧气。

A catalyst is a substance which speeds up a chemical reaction.

催剂是一种能加速反应质。

The fission of the cell could be inhibited with certain chemicals.

细胞裂变可以通过某些药品加以抑制。

Chemicals in the body break our food down into useful substances.

人体中元素把食分解成有用质。

Certain chemicals are easily absorbed into the bloodstream, while others are not.

某些药品很容易溶于血液, 有些则不行。

The explosion of the chemical plant has poisoned many local residents.

那座厂爆炸毒死了许多当地居民。

Semimetallic chemical element, chemical symbol B, atomic number 5.

半金属的学元素，学符号B，原子序数5。

Dyes come from plants or from chemicals.

染料是从植学质中得来的。

These chemicals are practically insoluble in water.

这些学质几乎不溶于水。

As chemical reagent and corrodent of integrated plate.

作学试和集成电路电镀板的消蚀。

The same water was reused after chemical treatment.

原来的水经过学处理之后再度使用。

Chemicals are used to keep the insects down.

学品用于阻止昆滋生。

Have you studied the composition of the chemicals?

你研究过这种品的成分了吗?

Choice having introduced the hammerhead and cleading chemical composition.

介绍了锤头和衬板学成分的选择。

What are the chemical reaction characteristics of tropane alkaloids?

氢溴酸东莨菪碱的鉴别原理是什么？

The chemical fertilizer should be well dug in.

学肥料应该均匀地混入土壤中。

Chemical modification including oxygenation, esterify, graft copolymerization and so on.

学改性主要有氧、交联、酯和接枝共聚。

The chemical must be salted out and allowed to dry.

必须把这种学质加盐分离出来并让它变干。

We put chemicals in test tubes in our chemistry class.

我们上学课时把学品放进试管里。

The soil has been poisoned with chemical waste from the factory.

土壤被从工厂排出的学废料污染了。

The heat brings about a chemical reaction, and oxygen is liberated.

热量引起学反应, 释放出氧气。

A catalyst is a substance which speeds up a chemical reaction.

催是一种能加速学反应的质。

The fission of the cell could be inhibited with certain chemicals.

细胞的裂变可以通过某些学品加以抑制。

Chemicals in the body break our food down into useful substances.

人体中的学元素把食分解成有用的质。

Certain chemicals are easily absorbed into the bloodstream, while others are not.

某些学品很容易溶于血液, 有些则不行。

The explosion of the chemical plant has poisoned many local residents.

那座工厂的爆炸毒死了许多当地居民。

Semimetallic chemical element, chemical symbol B, atomic number 5.

半金属化元素，化符号B，原子序数5。

Dyes come from plants or from chemicals.

染料是从植物化物质中得来。

These chemicals are practically insoluble in water.

这些化物质几乎不溶于水。

As chemical reagent and corrodent of integrated plate.

作化试剂和集成电路电镀板消蚀剂。

The same water was reused after chemical treatment.

原来水经过化处理之后再度使用。

Chemicals are used to keep the insects down.

化药品用于阻止昆虫滋生。

Have you studied the composition of the chemicals?

你研究过这种药品成分了吗?

Choice having introduced the hammerhead and cleading chemical composition.

介绍了锤头和衬板化成分选择。

What are the chemical reaction characteristics of tropane alkaloids?

氢溴酸东莨菪碱鉴别原理是什么？

The chemical fertilizer should be well dug in.

化肥料应该均匀地混入土壤中。

Chemical modification including oxygenation, esterify, graft copolymerization and so on.

化改性主要有氧化、交联、酯化和接枝共聚。

The chemical must be salted out and allowed to dry.

必须把这种化物质加盐分离出来并让它变干。

We put chemicals in test tubes in our chemistry class.

我们上化课时把化药品放进试管里。

The soil has been poisoned with chemical waste from the factory.

土壤被从工厂排出化废料污染了。

The heat brings about a chemical reaction, and oxygen is liberated.

热量引起化反应, 释放出氧气。

A catalyst is a substance which speeds up a chemical reaction.

催化剂是一种能加速化反应物质。

The fission of the cell could be inhibited with certain chemicals.

细胞裂变可以通过某些化药品加以抑制。

Chemicals in the body break our food down into useful substances.

人体中化元素把食物分解成有用物质。

Certain chemicals are easily absorbed into the bloodstream, while others are not.

某些化药品很容易溶于血液, 有些则不行。

The explosion of the chemical plant has poisoned many local residents.

那座化工厂爆炸毒死了许多当地居民。