Semimetallic chemical element, chemical symbol B, atomic number 5.
半金属化
元素,化
符号B,原子序数5。
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
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
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
。
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。
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