化学

The results show that the magnetization of Fe overlayers iscrucially determined by the state of GaxS passivation layer and the presence of excess Asafter the anneals.

着重分析了S钝化GaAs衬底的表面化学结构与Fe薄膜磁性质之间的联系，表面化学特性的改变通过改变钝化表面的退火温度来实现。

Congress appropriates $5,000 to the Bureau of Chemistry to study chemical preservatives and colors and their effects on digestion and health.

国会提拔5，000美金给化学研究所，让他们研究对人类消化和健康有利的化学防腐剂和着色剂。

Is a HK Basked Company Specializes in production and sales of PCB chemical product.

简介： 鼎业化学有限公司是一家专业生产经营PCB化学产品的港资企业。

This article basted on the viewpoint of sustainable development,elaborated the characteristic of chemical pesticide on the environmental pollution and harm to human health,has analyzed the present situation and reason of chemical pesticide on the environmental pollution in our country,it got Countermeasures of sustainable forest protection that adapt the development of ecology forestry.

以可持续发展思想为指导，阐述了化学农药对环境污染的特点及对人类健康的危害，分析了我国化学农药对环境污染的现状和原因，并针对森林保护工作存在的问题，进一步提出了适应我国生态林业发展的可持续森林保护对策。

In this paper, the characteristics of ancient sea water during the formation of the potash deposit was studied, the physical-chemical peculiarities of potassium-forming brines were analyzed by using the phase diagram, the formation mechanism of this mineral deposit was investigated based on the chemical foundation of its formation conditions.

本文研究探讨了该矿床形成时的古海水特点，根据相化学，分析成钾原始卤水的物理化学特性，从矿体形成的化学基础来研究老挝钾镁盐矿床形成的机制。

Our product catalogue covers a wide range of chemistries and biological activities.

我们的产品目录包含了广泛的化学和生物化学活性物质。

Among them, it is an actual work that classifies water based on its chemical characteristics.

其中，根据地下水的水化学特征进行水化学分类是一项经常要做的实际性工作。

In this text,according to home and abroad scholars's study on design of sonochemical reactor and parameters of ultrasound cavitation, I designed the sonochemical reactor cohered with transducers on its side wall, and study cavitation field and ultrasound field distribution by changing power and frequency ,and made research in absorption of different power and frequency ultrasound traveling in water, and especialy study the cavitation with different sound intensity.

笔者综合国内外学者关于声化学反应器的设计思路，设计了侧壁黏结换能器清洗槽式声化学反应器，改变频率定性测量反应器中的声场和空化场分布，研究不同频率的超声在水中传播的吸收情况、声空化和声压或声强的关系以及一定频率的超声在水中的有效空化范围。

It conduces to student initiatively to probe into and act on one's own study .

化学研究性学习有利于培养学生的创新能力、实践能力、问题意识、合作意识以及关注化学与自然、社会、生活的联系。

The results showed that The ratio of the compositions of the two extracts are different, and the extract rate of the main chemical substances are high in extract decocted together than in extract decocted single.

结果表明，加醇合煎、水合煎、水分煎的提取物均未发现明显新峰，但三者各共有峰相对积分面积存在差异，加醇合煎和水合煎提取物中主要化学成分的提取率大于水分煎提取物，且共有化学成分的比例也不同。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷