Semimetallic chemical element, chemical symbol B, atomic number 5.
半金属化学元素，化学符号B，原子序数5。
These chemicals are practically insoluble in water.
这些化学物质几乎不溶于水。
Dyes come from plants or from chemicals.
染料是从植物或化学物质中得来。
As chemical reagent and corrodent of integrated plate.
作化学试剂和集电路电镀板消蚀剂。
The same water was reused after chemical treatment.
原来水经过化学处理之后再度使用。
Chemicals are used to keep the insects down.
化学用于阻止昆虫滋生。
Have you studied the composition of the chemicals?
你研究过这分了吗?
What are the chemical reaction characteristics of tropane alkaloids?
氢溴酸东莨菪碱鉴别原理是什么？
Choice having introduced the hammerhead and cleading chemical composition.
介绍了锤头和衬板化学分选择。
The chemical fertilizer should be well dug in.
化学肥料应该均匀地混入土壤中。
We put chemicals in test tubes in our chemistry class.
我们上化学课时把化学放进试管里。
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.
必须把这化学物质加盐分离出来并让它变干。
The heat brings about a chemical reaction, and oxygen is liberated.
热量引起化学反应, 释放出氧气。
The fission of the cell could be inhibited with certain chemicals.
细胞裂变可以通过某些化学加以抑制。
A catalyst is a substance which speeds up a chemical reaction.
催化剂是一能加速化学反应物质。
Chemicals in the body break our food down into useful substances.
人体中化学元素把食物分解有用物质。
The soil has been poisoned with chemical waste from the factory.
土壤被从工厂排出化学废料污染了。
The field trials indicate that the demulsifier chemical can effectively demulsify c...
应用除油剂除油后污水达到回注指标,直接经济效益显著。
The wrong chemical balance can cause severe distortion of the photographic image.
化学水不合比例可引致摄影图像严重失真。
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It was easy to get the chemicals, but he needed the bodies.
添加剂很容易得到，但是没有测试者。
Is just a chemical reaction that compels animals to breed.
不过是让动繁衍后代的化学反。
For bioluminescence, creatures require two unique chemicals.
为生发光，生需要两种独特的化学质。
Now, how did you discover these chemicals?
你们是怎样发现化学品？
Cigarette smoke contains 69 chemicals that are known to cause cancer.
香烟含有69种致癌化学质。
It also generates reactive chemicals that attack the microbes from within.
它还能产生活性化学质，这种化学质能从内部攻击微生。
They analyzed bacteria, fungi, parasites and chemicals.
他们分析细菌、真菌、寄生虫和化学质。
Because MDMA affects serotonin, a nervous system chemical.
这是因为MDMA会影响一种名为“血清素”的神经系统化学质。
Pieces of hair can take in this chemical.
毛发会吸收这种化学质。
Fertilizer is a chemical that helps plants grow.
化肥是一种帮助植生长的化学质。
There are two important chemicals found in all our brains - dopamine and acetylcholine.
多巴胺和乙酰胆碱。
Never use harsh chemicals that can discolor the boot.
千万不要使用强效化学质，以免靴子褪色。
They like the chemicals from a person's body.
它们喜欢人体中的化学质。
Industries pollute rivers by dumping poisonous chemicals into them.
工业企业向河流倾倒的有毒化学质，污染水源。
A train derailment earlier this month spilled toxic chemicals.
本月早些时候，一列火车脱轨，泄漏有毒化学质。
The airbags contain a chemical that could make them explode.
气囊内含有能够造成爆炸的化学质。
That's adding a chemical to clouds to increase rain or snowfall.
它是向云中添加化学质以增加降雨或降雪。
They contain a harmful chemical that caused my liver to fail.
药里含有一种能导致肝功能衰竭的有害化学质。
Carrying the hurt or anger of an offense leads the body to release stress chemicals.
满怀冒犯后的伤害或愤怒会导致身体释放压力化学质。
Exercise releases endorphins which are natural feel-good chemicals in the body.
运动可以释放内啡肽，这是一种让人感觉良好的天然化学质。
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详细解释
化学元素，化学符号B，原子序数5。
学60秒 听力 2013年7月合集 学60秒-学美国人 2020年10月合集 学60秒-学美国人 2019年6月合集 
电路电镀板
用于阻止昆虫滋生。
繁衍后代的化学反
。
