Corrosively medium for chemical production such as sodium hydrate,caustic soda,sulfuric acid,nitric acid,acetic acid,fatty acid.

化工生产品中的腐蚀性物料，如：烧碱、纯碱、浓稀硫酸、碳酸、醋酸等。

We imagine using an anticatalyst to "freeze out" any chemical reactions in the system.

可想象利用一种反催化剂使系内的任意化学反应“冻结”。

The chemical composition,petrographic analysis and dispersing property of kinds of bauxitic clay are compared.

对比研究了几种铝矾土的化学组、相组和分散性能。

The microorgan-isms employed include mainly chemical conversion bacteria,phototropic bacteria and alga.

所利用的生物包括：化学转化细菌、向光性细菌和藻类。

Objective To explore the method of chemical synth esis of L-alanyl-L-glutamine dipeptide.

目的探讨L-丙酰-L-谷酰胺双肽的化学合方法。

As chemical reagent and corrodent of integrated plate.

作化学试剂和集路镀板的消蚀剂。

These chemicals are practically insoluble in water.

这些化学物质几乎不溶于水。

Chemical modification including oxygenation, esterify, graft copolymerization and so on.

化学改性有氧化、交联、酯化和接枝共聚。

This article reports a method of preparation of metal-copper-powder with cuprammonia by directIy chemical method.

本文报导了一种用化学方法直接从铜溶液中制取金属铜粉的方法。

Certain chemicals are easily absorbed into the bloodstream, while others are not.

某些化学药品很容易溶于血液, 有些则不行。

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 photocatalysis of the semiconductive materials convert the photon energy to chemical energy.

半导材料的光催化效应可将光能转化为化学能。

Chemicals are used to keep the insects down.

化学药品用于阻止昆虫滋生。

Have you studied the composition of the chemicals?

你研究过这种药品的分了吗?

The wrong chemical balance can cause severe distortion of the photographic image.

化学药水不合比例可引致摄影图像的严重失真。

The chemical match was not yet in existence;at that epoch the Fumade steel represented progress.

当时还没有化学火柴，代表那个时代的进步的是菲玛德打火机。

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。

The anti-segregability, chemical miscibility and size effect of bulk blending fertilizers are discussed.

讨论掺混肥的抗离析性能、化学可混性，粒度对掺合性能的影响。

ObjectiveTo study the chemical constituents of essential oil from Daucus carota L.from Guizhou Province.

目的分析鹤虱风挥发油分。

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。