A drug is a chemical substance.
毒品是一种化学物质。
Every chemical substance is a key to the gates of heaven and hell.
每一种化学物质都是一把打开天堂和地狱之门的钥匙。
One way of identifying a substance without resorting to fiddly chemical methods is to determine its density.
其中一种不用高精度的化学方法验证物质的办法就是确定它的密度。
One way to identify a substance without resorting to fiddly chemical methods is to determine its density.
要分辨一种物质，可以用密度测量法。而无须借助费事繁琐的化学分析法。
Like cayenne pepper, it has the ability to deplete nerve cells of substance p, a chemical that transmits pain signals to the brain, when used externally.
就像辣椒一样，外用时能消耗传送疼痛信号到大脑的神经细胞中一种称为P物质的化学物质。
The mythical philosopher's stone, or sorcerer's stone, is said to be a chemical substance capable of turning lead into gold.
神秘的点金石，或魔法石，据说是一种能将铅转化为金的化学物质。
Over time, it short-circuits pain by depleting nerve cells of a chemical called substance p, which helps transfer pain signals along nerve endings to the brain.
随着时间的推移，它通过消耗神经细胞中一种叫做P物质(或称肽物质，一种神经传递介质)的化学物质来减轻疼痛，该物质使痛觉信号沿神经末梢传递至大脑。
Let's take a look at how the toxic chemical substance was found on the island.
让我们看看台湾如何发现这种有毒化学物品的。
Which is that, from what we're going to prove, is that the chemical potential in the mixture is always less than for the pure substance.
也就是，从中我们将证明，混合物的化学势，永远比纯净物的低。
Chemists discovered the eighteenth millionth chemical substance known to science on June 15, 1998. Many thousands more have been developed since then.
到1998年6月15日时，化学家已经发现1800万种化学物质，之后又发现成千上万种新物质。
Dr Yun plumped instead for a chemical called Green Flourescent Protein (GFP), the substance responsible for making certain species of jellyfish glow in the dark.
Yun博士果断放弃了传统介质，选用了绿色荧光蛋白(GFP)作为介质——这种物质能使一种生活在黑暗中的水母发光。
This substance can be reduced to a single chemical and oxygen by passing an electrical charge through it.
通电后，这种物质可以被分解为一种单一的化学制品和氧。
In the substance he eventually lit on, this happens because at room temperature there are chemical bonds between polymer molecules and water molecules.
终于在他点燃某种物质时，由于室温时聚合物分子与水分子之间存在的化学键，发生了这种情况。
This chemical substance can be resolved into an acid and oxygen.
这种化学物质可以分解成一种酸和氧。
We can get a new substance if we incorporate a chemical substance with others.
如果我们把一种化学物质和其他化学物质混合就能得到一种新物质。
A molecule is the smallest part of a chemical substance.
分子是化学物质的最小的部分。
A chemical substance that prevents or slows a cathodic or reduction reaction.
一种阻止或减缓阴极反应的化学物质。
The main cause of this area's water pollution is the chemical substance that leaks out of a paper mill by the river bank.
这一地区水污染的主要原因是河边一家造纸厂泄漏的化学物质。
Antibiotic: Chemical substance that in dilute solutions can inhibit the growth of microorganisms or destroy them with little or no harm to the infected host .
抗生素： 生物体（通常是微生物）产生的对其他微生物有伤害作用的化学物质或代谢产物。
More and more attention is paid to study on the relation between the chemical substance structure and properties with the method of topological index.
应用拓扑指数的方法来研究化学物质的结构与性能之间的关系越来越受到人们的关注。
The isoenzyme pattern and the activity of hydrogen peroxidase were analysed. The activity of certain chemical substance in larva's saliva gland was verified.
并对虫瘿的同工酶酶谱和过氧化氢酶活性进行了分析，对幼虫唾液腺内化学物质的活性进行了验证。
Keto-enol tautomerism is the most common tautomery phenomenon. Keto -enol themselves are the real chemical substance.
酮及烯醇互变是互变作用最普通的现象，它们都是真实的化学实体。
Endocrine Disruptor is the general narration of harmful chemical substance which affects and disturbs endocrine system of living beings.
环境激素是指影响和扰乱生物内分泌系统的有害化学物质的总称。
Some of them had exposed to metal dusts and special chemical substance.
部分患者有接触金属粉尘、特殊化学物质史。
The carbon-sulfur analyzer was corrected by mens of the pure chemical substance and was used to determine carbon content in titanium alloys.
采用纯化学物质对高频加热-红外检测碳硫仪校准，对钛合金中的碳量进行测定。
The influences of chemical substance import of rainfall and rain dripping on organism substance circulation of forest ecosystem in Ailao Mountain of Yunnan Province were analyzed.
为了分析大气降水的化学物质输入及其降水淋溶对云南哀牢山森林生态系统生物物质循环产生的影响。
The black chocolate and the carbohydrate can cause the cerebrum to produce the blood serum amine, one kind the chemical substance which causes the person mood to relax.
黑巧克力与碳水化合物都能使大脑产生血清胺，一种使人心情放松的化学物质。
In addition, the present status of implementation of the new chemical substance notification and its effects on chemical environmental management in China is given briefly.
文中还介绍了我国新化学物质申报审批制度的实施现状及其对化学品环境管理的影响。
In addition, the present status of implementation of the new chemical substance notification and its effects on chemical environmental management in China is given briefly.
文中还介绍了我国新化学物质申报审批制度的实施现状及其对化学品环境管理的影响。
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