查询词典 chemistry

Iron-manganese cutan; matrix soil; manganese oxide; heavy metal element; soil geochemistry; 1.4 nm intergrade mineral; surface chemistry property

农业科技，农业基础科学，土壤学铁锰胶膜；基质土壤；氧化锰；重金属元素；土壤地球化学； 1.4nm过渡矿物；表面化学性质

With some examples, the correlat ions between the thermal expansion coefficients of minerals and the types of cr ystal structures, the nature of chemical bonds, the valencies of ions , the interionic distances, the percentage ionic characters, the electronic conf igurations of ions and the chemical compositions are discussed and summarised . The crystal chemistry approach has been used in the calculation of the th ermal expansion coefficients for minerals with simple structures and composition s.

晶体化学方法是研究矿物热膨胀系数的有效方法，但由于矿物的热膨胀系数和晶体化学参数之间的定量关系尚未完全弄清，目前仅仅能对简单结构矿物的热膨胀系数进行计算，结构、成分较复杂的矿物的热膨胀系数计算尚缺乏好的晶体化学模型。

The intermolecular interaction is of importance in chemistry, biology and materials science.

分子间相互作用是一类十分重要的作用，这类作用的实验和理论研究越来越受到化学家、生物学家、材料科学家等的重视。

It is well known that the intermolecular interactions play an important role in chemistry, physics, and in particular in the biodisciplines.

众所周知，分子间的相互作用在化学，物理和特别是在生物方面起着非常重要的作用。

We study the coal intermolecular interactions by quantum chemistry theoretic methods in this paper.

本文应用量子化学理论方法计算研究了煤分子间相互作用。

General use Mathematics, Geometric, Drawing, Chemistry and Physics, Biology and Medicine, Prefix Used wuth SI Units, si dERIVED Units, Subatomic Particles and Quanta, International System of Units Signs and Symbol Print version

常用数学，几何，绘图，化学，物理，生物，医疗，国际单位字首，国际导出单位，次原子粒及国际单位符号表列印版本

The preliminary plan and actualized blue prints were presented,which was to construct an interact teaching,interpenetrative and flexible polymer science experiment course combined polymer chemistry,polymer physics and polymer process.Students learn from molecular design to synthesize polymer compounds and character properties of the materials,them process them to an utilized produce in this course.

设想将高分子化学、高分子物理和高分子成型加工三门实验课程有机地串联起来，组建成一门包括从高分子材料设计(用计算机软件进行分子设计、性能模拟)、聚合物合成、性能测试到加工成型，能环环相扣、互动式的、柔性化的高分子科学实验课程；提出了初步的实践方案。

SCIENCE (for Grades 7 -9) is a newly assigned comprehensive course in the new round of educational course reform. Science course takes training the science attainment of students as purpose, it covers the original contents of Physics, Chemistry, Biology and Geography for junior high school, also Astronomy and some intersectional subjects are involved.

科学》(7～9年级)课程是新一轮基础教育课程改革中新设置的一门综合性课程，它以培养学生的科学素养为宗旨，涵盖了原有的初中物理、化学、生物以及地理的内容，同时在天文学及一些交叉学科领域有所涉及。

Furthermore, it is their importance in the interstellar chemistry.

这使得它们有可能稳定存在于温度较低的环境当中。

The intramolecular proton transfer reactions have attracted great experimental and theoretical interests due to its importance to chemistry and biochemistry.

分子内质子转移反应由于其在化学和生物化学领域的重要性而在实验和理论上都引起了广泛的重视。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐