化合物

维生素是一种人体无法合成的化合物。

A vitamin is a chemical compound that cannot be synthesized by the human body .

叠氮化物：一种化合物，包含基团N。

Azide : a chemical compound that contains the group N.

含硫化合物的名称前通常有前缀thio。

Sulphur-containing compounds are often prefixed by the term ' thio '

不太稳定的化合物被转换成了一种叫做Delta-ATHC的化合物。

The less stable compounds were converted into a compound called Delta-A THC .

这些化合物在肝脏中与遗传物质实现结合。

These compounds bind with genetic material in the liver .

碳化合物氧化后必然会产生二氧化碳。

Carbon dioxide is a necessary result of the oxidation of carbon compounds .

这种黏性的化合物能牢牢地粘在这个表面上。

This sticky compound adheres well on this surface .

有机化合物的分子中含碳。

Organic compounds contain carbon in their molecules .

研究重点追踪了5种化合物含量上升的影响。

The research effort has focused on tracing the effects of growing levels of five compounds

空气是气体的混合物，不是化合物。

Air is a mixture , not a compound of gases .

氧化铁是铁和氧的化合物。

Iron oxide is a compound of iron and oxygen .

水是含有氢元素和氧元素的化合物。

Water is a compound containing the elements hydrogen and oxygen .

a-fe2o3（赤铁矿）是中子衍射最先研究的化合物之一。

A-fe2o3 ( haematite ) was one of the first compounds to be studied by neutron diffraction .

碳是一种（化学）元素，而二氧化碳则是一种化合物。

Carbon is an element , while carbon dioxide is a compound .

不含碱性氮的化合物包括吡咯、吲哚、咔唑和苯咔唑。

Non-basic nitrogen-containing series include pyrroles , indoles , carbazoles and benzcarbazoles .

可是，基本的异种化合物活性看来是由配基所决定的。

However , basic Allelochemical activity seems to lie with the aglycone .

事实上还不知道芳香族化合物的直接烷氧基化的方法。

Direct alkoxylation of aromatic compounds is virtually unknown .

烃是一类最重要的有机化合物。

Hydrocarbons are among the most important organic compounds .

氯化物被认为是一种元素与氯化合组成的化合物。

Chlorides are considered as compounds consisting of one element combined with chlorine .

有机化合物构成生命的基础。

Organic compounds form the basis of life .

在稠环和桥环化合物中，两个碳原子是两个环公用的。

In fused-ring and bridged-ring compounds two carbons are common to the two rings .

当碱加到这类化合物中，将发生一系列质子离解作用。

When alkali is added to such compounds a series of proton dissociations occurs .

它们是否被代谢成毒性更强的化合物？

Are they metabolized to more toxic compounds .

要避免使用那种非专用的同位素成分的铀化合物。

It is important to avoid the use of uranium compounds of unspecified isotopic composition .

当两种或两种以上的元素结合形成化合物时，发生化学变化。

When two or more elements combine and form a compound , a chemical change takes place .

人工合成了许多和腺嘌呤有关的化合物，并用几种生物鉴定法试验过。

A wide range of compounds related to adenine have been synthesized and tested in a number of bioassays .

在更高的温度范围内，这些化合物的绝大部分又被苯噻吩和更复杂的环状化合物置换。

The predominance of these series is replaced in turn by benzothiophenes and increasingly complex ring-like compounds in the higher temperature ranges .

被ScienceDirect数据库描述为“化学清洗剂”的羟基自由基是大气中发现的重要化合物，可以和其他有机分子发生反应。

Hydroxyl radicals , described as a " chemical scavenger12 " by Science Direct , are important chemical compounds found in the atmosphere due to the reactive nature with other organic molecules13 .

碳氢化合物（HC）像一氧化碳一样，为未燃尽的和被浪费掉的燃料

Hydrocarbons ( HC ) , like carbon monoxide , represent unburned and wasted fuel .

为化合物的研究中的新药物申请（IND）。

Investigational New Drug Application ( IND ) for the compound .