查询词典 chemistry

The suitable synthesis conditions of those new products have been studied. The structures of them are affirmed by IR spectroscopy, 1~H NMR,(13)~C NMR and Elemental Analysis;the configurations of them are also analyzed by theoretical calculation of quantum chemistry. Influences of the length of hydrophobic group, the degree of substitution on the solubility, surface activity, emulsifying property, foam property, hygroscopicity and humidity-retaining ability, compatibleness of those new products have been studied in detail.

探讨了各反应产物的适宜合成条件，并利用红外吸收光谱、1~H、(13~C核磁共振、元素分析等仪器分析手段和量子化学从头算STO-3G对所得产物的结构进行了表征；同时较详细地研究了疏水基碳链长度、反应取代度对合成产物的溶解性、表面活性、乳化性、泡沫性、吸湿保湿性和配伍性等物化性质和应用性能的影响规律。

The Carbonyl Compound Mode Evaluation Device is a research chemical production line newly built by Lanzhou Institute of Chemistry Physics Chinese Academy of Sciences, whose main intention is to make qualitative and quantitative evaluation of the properties of cobalt salt catalyst through the process of producing high-carbon alcohol with carbonyl compound .

"羰基合成模试评价装置"是中科院兰州化学物理研究所新建的研究性化工生产线，主要是通过羰基合成制高碳醇的过程，对钴盐催化剂性能做出定性定量的评价。

It is a very important compound in organic chemistry.

这在有机化学上是很重要的化合物。

This is the web page of The Journal of Theoretical and Computational Chemistry.

这是理论与计算化学杂志的网页。

Organic conceptional diagram has been used to explain some questions in basic organic chemistry and fine chemicals.

以有机概念图理论分析了施胶剂组成对施胶剂效率的影响，采用三元图表示施胶剂I/O值与施胶剂性能间的关联规律，阐述了松香酯的施胶机

Combined with some concretion teaching plan, this paper tries to approach the teaching method of junior high school chemistry teaching.

本文结合一些具体教案，试图探讨初中化学教学中与此相适应的一些教学方法。

The roundness concentration tank, consisting of main body、 condensator、 gas-liquid separator and liquid receiving barrel, serves to concentrate、 distil the material liquid and reclaim orgqnic menstruum in the pharmacy、 foodstuff and chemistry.

球形浓缩罐主要由浓缩罐主体、凝器、液分离器、液桶四个部分组成，可用于制药、器、工等行业对料液的浓缩、馏及有机溶媒的回收等工艺。

Solution chemistry and theoretical analysis indicated that the results of heavy metal ions adsorption upon brucite conformed with Langmuir and Freundlich isotherm. The conditional stability constants of surface complexation model of brucite adsorbing Cu〓 and Pb〓 were deduced.

通过水镁石吸附重金属离子的溶液化学和理论分析表明，其吸附结果符合Langmuir和Freundlich吸附等温式，并计算出水镁石吸附Cu〓和pb〓的表面络合条件稳定常数。

Crickets Con Connubial Conquests with Chemistry As Valentine's day approaches, remember, it's the thought that counts.

随着情人节的临近，请记住，心意才是最重要的。

Typical chemistry students have difficulty connecting symbolic and visual representations of reactions and often fail to account for conservation of mass and the effects of heat and temperature.

典型的化学专业的学生在联系反应的符号和视觉展示方面遇到了困难，经常无法解释质量守恒定律及热量和温度的效应。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。