A chemical factory blew up in the North of England.

They are taking precautionary measures to safeguard their forces from the effects of chemical weapons.

他们正采取预防措施保护其军队免受化学武器的伤害。

Professor Orr has developed interesting ways of tagging chemical molecules using existing laboratory lasers.

奥尔教授发明了用现有实验室激光设备给化学分子做记号的种种有趣的办法。

President Hussein called on all countries in the Middle East to scrap nuclear or chemical weapons.

侯赛因总统号召中东所有国家放弃核武器和化学武器。

A huge row has developed about the pollution emanating from a chemical plant.

一家化工厂造成的污染已经引发了激烈争论。

Catalysts are materials which greatly speed up chemical reactions.

催化剂是可以大大加速化学反应的物质。

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 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.

The most chemically satisfying approach may seem to require the use of the assay system.

化学上最理想的探讨途径,似乎需要应用一些鉴定系统.

These chemically active ferments cause havoc.

这些化学活性的酶造成广泛损害.

All are aposematuically colored , suggesting that they all are chemically protected.

它们全都有警戒色, 表明它们全都有化学的保护作用.

There may be a need for retarding growth chemically to keep trees within bounds.

可能需要用化学剂抑制生长,使树冠保持在一定的范围内.

We inject guinea pigs or rabbits with enkephalins that are chemically coupled to large proteins.

我们将脑素和大分子蛋白质从化学上结合起来,把它注射给豚鼠或兔.

When exposed to stress, in whatever form, we react both chemically and physically.

当我们遇到压力, 而无论是何种压力时, 我们都会做出机能和体能上的反应.

Obviously the chain structure will affect the diffusion-controlled and chemically-controlled termination processes differently.

显然,链结构对扩散控制和化学控制的终止过程的影响是有差别的.

Graphite is chemically allied to diamond.

石墨和金刚石在化学组成上有联系.

These chemicals modulate the effect of potassium.

这些化学物质可以调节钾的功效。

minute amounts of chemicals in the water

水中含量极小的化学成分

An imbalance in certain chemicals leads to disturbances in the brain's function.

某些化学成分失衡会道致大脑功能的紊乱.

Nitrates are chemicals that occur naturally in water and the soil.

硝酸盐是水和土壤中自然存在的化学物质。

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.