查询词典 chemical lead

Generally thermal aged and chemical poisoning can lead to the deactivation.

然后对催化器的失效机理进行了分析，重点研究了催化器的热失效和化学中毒失效。

The physical and chemical requirements of LME lead ingot s were introduced,and production technology was also introduced breifly.

简要介绍韶关冶炼厂LME 铅锭的物理和化学质量要求及LME 铅锭的生产工艺过程。

Based on the analysis of international circumstances, it points out that though foreign countries are having the lead of chemical medicines, the variations of human diseases and the changes in people's senses of health.

通过对国际环境分析，指出虽然国外天然药物的研发水平领先于我们，但由于化学药物的缺陷、人类疾病谱的变化以及人们健康观念的改变，我国中成药仍有较大的发展空间，特别是复方中成药有较大的优势。

But in the paper pulping process, removing lignin by chemical methods not only lead to very seriously environmental pollution ,but also increase the cost of paper making.

然而，在制浆造纸过程中，通过化学方法去除木质素不但造成严重的环境污染，而且大大增加了造纸的成本。

I've studied long and hard the chemical attributes of lead and gold...it seems I've finally discovered the secret of making the former into the latter.

我花费了漫长的时间努力钻研铅和黄金的化学性质……看起来终于让我发现把前者转化成后者的秘诀了。

RESULTS: We got the structures of 50 new chemical compounds as the lead compounds for further drug filtering, and 3 of 8 compunds we synthesized successfully had a bioactivity between 220 and 310 μmol/L.

结果：得到50种化合物结构并成功合成8种，经测定其中3种有活性（IC50在220~310 μmol/L间）。

This paper briefly presented the chemical composition and classification of organic pollutants in inhalable particles. The emission characteristics which attracted much attention of main pollutant sources from combustion, cooking, motor vehicle were analyzed respectively in this paper, indicating that different pollutant sources lead to different emission characteristics.

本文概述了环境空气中有机污染物的化学组成、分类；对燃烧源、餐饮源、交通源等几种污染源的排放特征进行了着重分析，表明污染源不同，其排放特征具有很大差异。

Through reviewing the reproductive toxicity of some major environmental chemical pollutants, including endocrine disrupters, organic phosphor and chlorine pesticides, organic solvents, and some metals such as lead, cadmium, mercury, manganese, the paper finds that all these ECPs have different extents of toxic effects to experimental auimals on procreation, gestation and even on offspring, some of which have been evidenced by the population epidemiological studies.

本文通过对邻苯二甲酸酯类和双酚A等内分泌干扰物、有机磷和有机氯农药、常用有机溶剂以及常见金属的生殖毒性研究的综述，发现它们均在不同程度上造成对实验动物的生殖毒性、妊娠毒性以及对子代的毒性影响，其中部分在人群流行病学研究上得到证实。

The recoveries of rhodium by lead and nickel sulfide fire assay were 81.5%±1.2% and 75.1%±3.9%, respectively, and the latter was proved to be independent on matrices of chemical standards and geological standard materials.

铅试金法的流程回收率（ n =4）为81.5%±1.2%；镍锍试金法的流程回收率（ n =6）为75.1%±3.9%，对简单化学标准和地质标准物质基体，铑的回收率相近。

Under elec trodes, elec trochemical reaction will combin e with chemical catalysis reaction,which will lead to the elec trochemically and catalytically degradation of organic molecules.

在电极的作用下，电化学反应和化学催化作用结合，可导致有机分子的电催化降解。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐