查询词典 chemistry

The conclusion is as follows: One of the common characteristics of overseas textbook is that they all reflect the basic concept of "structure determines property, the property of structure". The logical structure of overseas textbooks of organic chemistry is that the nature of organic compounds closely related to the theory of organic chemistry by that relationship and transformation of functional groups decide the property and reaction.

国外教材的共同特点之一是体现出"结构决定性质，性质体现结构"的基本观念，从官能团间的关系与转化来统摄有机化合物的性质及其反应，使有机化合物的性质紧扣有机化学的相关理论，构成了有机化学教材的逻辑结构。

I had had one year of chemistry in high school, and my opinion of it was summed up when I told a friend,"Chemistry serves no purpose, but to bring down your G.P.A."

中学时我学了一年的化学，我对它的看法就像我对一个朋友总结的那样："化学没有任何作用，只会降低你的平均分。"

Fuse tartar therapy:The tooth gold biotechnology product that contains a natural plant through to lift to do has no chemistry additive, just like flavor, don't need into appetite absorption, brush teeth to gargle and then can see obvious effect just after needing through contain, use in brief, safety Gao, belong to have no pain go to stone, principle be pass to refine from the plant but of essence composition, reaction happen with tartar this kind of chemistry derivatives, thus attain thorough gum fuse tartar of effect, the tooth stone calculus sheds off to recover the sheen that tooth surface originally possessed, passing to brush teeth will have been already fused of gums bottom the tartar clean up, after return can plus the 1 F protection film in the tooth surface, make the tartar no longer easily re- adhered to.

溶解牙石疗法：通过口含天然植物提练的牙齿黄金生物科技产品，无任何化学添加剂，无异味，无需进入肠胃吸收，只需要通过口含后刷牙漱口就可以看到明显效果，使用简单，安全性高，属于无痛去石，原理就是通过从植物中提炼而出的精华成份，跟牙石这种化学衍生物发生反应，从而达到深入牙龈溶解牙石的功效，牙结石脱落恢复牙齿表面原有的光泽，通过刷牙可将已溶解的龈下牙石清理出来，之后还能在牙齿表面加上一层保护膜，让牙石不再容易重新附着。

Supramolecular chemistry is one of the new branches of the chemistry,it has been regarded as one of the important headstream of new conception and advanced technique.

超分子化学是化学领域的一门交叉学科，被认为是21世纪新概念和高新技术的重要源头之一，是当代化学的前言。

Diethyl phosphite was obtained from the Department of Heteroatom Chemistry of Shanghai Institute of Organic Chemistry as a gift.

乙基磷酸是来自杂处化学上海有机化学研究所作为礼物。

And brilliant achievements have been made in the teaching of the chemistry contest, which has attracted the worlds attention. On the other hand, there are some problems with the chemistry contest which can not be overlooked, like training inflexibly by stuffing exercises and grade-oriented practices.

化学竞赛一方面已经取得世界瞩目的辉煌成绩，为高校选拔了大批优秀学生；另一方面，也存在题海战术、机械训练、片面追求分数与名次等诸多不容忽视的问题。

The content of Elementary Chemistry is the main content of Inorganic Chemistry.

元素化学是大学化学及相关专业无机化学课程的核心内容。

State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012

吉林大学化学学院，无机合成与制备化学国家重点实验室，长春 130012

Thus arose the two great divisions of this science known as inorganic chemistry and organic chemistry.

于是，产生了这门科学的两大分支，即所谓的无机化学和有机化学。

This course is based on experimental contents of inorganic chemistry, organic chemistry, physics, and so on.

考核方式：实验考察，无机化学实验成绩占总成绩的30%；有机化学实验成绩占总成绩的55%；物理学实验成绩占总成绩的15%。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。