chemical的例句大全

Pickling: pickling is the process of removing surface oxides or impurities by chemical or electrochemical means.

浸酸: 是经化学或电化方法清除表面锈物或夹杂务.

The analyse of IR indicated that no chemical cross-linkage but physical composition occurred between PU and PA.

红外分析表明：在乳液聚合的过程中，PU与PA之间仅仅发生物理复合，而没有发生化学的交联。

The physical process of adhesion is discussed with adsorption theory and acid-base coordination theory, and the chemical process of adhesion is discussed with the mechanism of cure and cross-linkage.

用吸附理论和酸碱配位理论解释了物理过程；用固化、交联解释了化学过程。

In1829 the chemical in the willow tree that can relieve pain and fever was discovered to be salicin.

1829年，人们发现柳树中能止痛退烧的化学物质为水杨醇葡萄糖甙。

Effects of nucleus accumbens septi by chemical injury on learning memory abilities and exploratory behavior in rats

化学毁损伏隔核对大鼠学习记忆能力与探索行为的影响

Shanghai Chemical Sub-Zone ( FSCIP ) covers a planning area of 16 square kilometers.

上海化学工业区 奉贤 分区规划面积16平方公里.

A chemical solution of nutrients is added to the water to produce food for the plants.

在水中加一种化学营养剂作为植物的养料.

Only when its biology was understood and chemical pesticides and aerial spraying became available a few decades ago, could efforts be made to control the insect.

只是在几十年前认识了其生物性，有了化学杀虫剂和空中撒药之后，人们才开始努力控制这种虫害。

Over the years the copper has turned green because of a chemical reaction called patination.

年长日久，铜面在被称为“锈蚀”的化学反应的作用下变为绿色。

Methods for chemical analysis of fluorspar& The EDTA volumetric method for the determination of calcium fluoride content

GB/T5195.1-1985氟石化学分析方法EDTA容量法测定氟化钙量

Nanometer sized lead oxide was prepared by pyrogenetic decomposition of lead carbonate synthesized by chemical precipitation.

采用均匀沉淀法合成碳酸铅，在此基础上通过高温分解制备纳米氧化铅。

Therefore, China should learn the experience of Japan in the new round of high-speed economic growth, and continue developing the heavy and chemical industry better and faster.

果彼，人邦反在旧一轮经济上快删加中当当还鉴日本的经验教训，继开推入沉化工业又好又快的收铺。

The main reason of the diesel engine breakdown is the crack appeared in the short arm bolt of the connection rod caused by disqualification of chemical composition, microstructure and properties.

机损事故主要原因是连杆材料成分、组织与性能不合格导致连杆定位齿上出现裂纹，从而引发短臂处连杆螺栓早期疲劳断裂。

They can also be used to map the distribution of certain chemical elements.

它们也可用来给某些化学元素绘制分布图.

The calculation of double bond~ ( 13) C NMR chemical shift in bicyclic and polycyclic compounds

双环和多环化合物中双键~（13）c NMR化学位移计算

Secondly, starting from phosphorus oxychloride, pentaerythritol, neovaricaine, methacryloyl chloride and hydroxyethyl acrylate, the monomers 3 and 4 which containing the chemical structure of caged bicyclic phosphate were synthesized.

第二部分以三氯氧磷、季戊四醇、乙醇胺、甲基丙烯酰氯以及丙烯酸羟乙酯为原料，合成了含有双环笼状磷酸酯结构的丙烯酸酯单体3和4。

Test method for fast determination of chlorinity in imported& exported chemical fertilizer

进出口化肥中氯离子快速检验方法

Test method for fast determination of chlorinity in imported& exported chemical fertilizer

进出口化肥中氯离子快速检验方法

Test method for fast determination of chlorinity in imported& exported chemical fertilizer

进出口化肥中氯离子快速检验方法

Chemical Composition: Hydrophilic Aliphatic Polyisocyanate, Non-yellowing type.

化学成分：脂肪族聚异氰酸酯，不黄变。