化学

First, the quantity of gene with a special sequence is rare, commonly in microgram or less, which conflicts with the need for large samples of DNA in the solution methods.

首先，特定序列的基因样品通常是很少量的，大约在毫克级甚至更少，而溶液化学方法往往需要消耗大量的DNA样品，如果采用表面化学方法则此矛盾就可得到解决，只需极少量的样品就可进行研究。

Budget analysis shows whether simple or sophisticated model, the microphysics scavenging of aerosols by cloud and rain water is the major source of SO〓 in the liquid phase, then is the oxidation production in the liquid phase.

收支分析表明，无论是简单化学还是复杂化学，云水和雨水对气溶胶的微物理清除都是液相SO〓的主要来源，其次是液相内的氧化生成。

Quantities of materials, frequently less than one milligram in mass or one milliliter in ''.

微量化学研究极小数量物质的化学，通常研究对象质量小于一毫克或''。

Chemistry that deals with minute quantities of materials, frequently less than one ''.'milligram'.

微量化学研究极小数量物质的化学，通常研究对象质量小于一''。

The paper studies the chemical and mineralogical compositions, the technological and physical properties of tripoli by means of chemical analysis.

借助于化学分析、X射线衍射分析、工艺性能试验等方法，对粉石英的化学成分、矿物成分、工艺物理性质进行了研究。

The reasons of misapplication chemical additive were analyzed, and some measures and suggestions for keep away from safety risk were also put forward.

分析了造成这些化学添加物滥用的原因，提出了规避化学添加物风险的措施建议。

Alloy zinc powder; electrodeposition; surface modifiability; additive; rechargeability; EMD of pulse electrodeposite ; electrochemical performance

工程科技I，化学，物理化学、化学物理学合金锌粉；电沉积；表面处理；添加剂；可充性；脉冲电解MnO_2；电性能

We have learnt the molar volume of gas in this class. After class, the students are interested in chemical English, so I must do it better. Molar volume of gas is very important in our middle chemistry. So we have to learn it well, And we have to work harder!

这节课我们学习了气体摩尔体积，课后，学生对英语化学很感兴趣，故需要我做的更好，气体摩尔体积在中学化学中很重要，所以一定要掌握好，并为之去努力奋斗。

Topics covered include quantum chemistry, molecular mechanics, force fields, chemical education, and applications in academic and industrial settings.

包括的题目包括量子化学，分子力学，力量领域，化学教育和在学术性和工业底座里的应用。

When the molecular force field was used to treat solution systems, not considering the movement of electrons, in many force fields the chemical bonds between atoms must be confirmed to make sure that they can't be destroyed or formed in modeling procedure.

在用分子力场来处理溶液体系的时候由于没有考虑电子的运动，所以在很多力场中，原子间的化学键必须确定，以确保在模拟过程中化学键不会破坏或生成。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。