化学

In the first part, we studied the possibility of allyl as the protection group of the hydroxyl in nucleosides.

烯丙基作为糖化学中的一种常用保护基在核酸化学中有一定的应用，曾有人将它作为磷酸酯键及碱基环上羰基的保护基，但作为核苷糖环羟基的保护基还未有研究。

Aluminium foil of different purity was etched by chemic and alternating current method in this dissertation,and we find that alternating current method excels.

本文采用不同纯度的铝箔，对其进行化学腐蚀和交流电腐蚀，结果发现铝箔的交流电腐蚀要优于化学腐蚀。

Having been in the alternative health care field for Contact Us Description Monographs include chemistry chemical structure Phentermine Hydrochloride is a white crystalline powder very soluble in water and alcohol.

曾在卫生保健领域的另类接触我们描述为专着包括化学结构化学是服用盐酸白色结晶粉末很溶于水和酒精。

If it is other chemical components of the salts, we must speak to their specific trade names or chemical names, such as soda ash, baking soda, red alum, ammonium sulfate, potassium nitrate, potassium chloride, diammonium phosphate, etc., must can not be generally called "industrial salt" or "chemical salt."

如果是其他化学成分的盐类，一定要说出其特定的商品名称或化学名称，如纯碱、小苏打、红矾、硫酸铵、硝酸钾、氯化钾、磷酸氢二铵等，绝不能笼统叫"工业盐"或者"化工盐"。

As a result, the author discusses the thermodynamics habitus for the minerals either. With the calculation of the thermodynamics modeling, we run the dissolutionmodeling experiments for primary minerals (potash feldspar, albite, anorthite, andpyroxene, hornblende), which is under the conditions of organic acidic and 20 varietytemperature and pressure. The dissolution modeling experiments include 4 anorthitedissolution experiments, 8 pyroxene dissolution experiments, 8 hornblendedissolution experiments. We catch the records on the X ray diffraction, chemistryanalysis, SEMphotos, and the PH parameters. By theway, we discuss the dissolution habitus for the minerals either.

在热力学模拟计算的基础之上，进行20个不同温度和压力条件下，以有机酸作为溶解介质的储层砂岩骨架颗粒(钾长石、钠长石、钙长石以及铁镁暗色矿物中的辉石、角闪石等)的水—岩相互作用的溶解模拟实验，包括：4个钙长石的溶解实验、8个辉石的溶解实验和8个角闪石的溶解实验，获得了溶解模拟实验前后全部参与实验矿物的X射线衍射分析、化学全分析数据、扫描电镜照片，以及介质流体在实验过程中化学参数pH值的检测，在此基础上讨论了铁镁暗色矿物、长石等铝硅酸盐矿物在埋藏成岩过程中酸性介质条件下的溶解习性。

For that question: how a probability event becomes to be a certainty event after some time.The answerer is that the Probability is changing along the development of time since many factors will affect the Probability in that time interval and Probability=1 at the point it happened.

又如生化反应，在刚开始的时候，那些化学物质发生反应的概率可能很小，加入催化剂（或者即使不加入催化剂，由于各物质的溶度随着反应进行，时间的推移而改变）影响着后来某一时刻这些化学物质能否完全反应。

Course of antecedence: organic chemistry, biochemistry, food chemistry

先修课程：有机化学，生物化学，食品化学

2 All the internal and external surfaces of carbon steel materials should be treated with mechanical or chemical antirust method.

5.6.2所有碳钢材料的内外表面，均应进行机械的或化学方法防锈。采用化学方法除锈时，不应使材料产生腐蚀或斑点。

Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun

中国科学院长春应用化学研究所，高分子物理与化学国家重点实验室，长春 130022

Complex Compounds: basic concepts of complexes, behavior of complexes in aqueous solution, and applications of complexes.

课程目标：本课程介绍化学的基本原理和重要的化学反应，注重相关领域中化学的实际应用。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。