chemical symbol

What is the chemical symbol for copper ?

铜的化学符号是什么？

Chemical symbol editing system based on dynamic drawing

基于动态作图的化学符号编辑系统

What 's the chemical symbol for mercury ?

汞的化学元素符号是什么？

Use Form File of AutoCAD to develop drawing of chemical symbol

利用形文件开发绘制化工专业符号

Input and Comprehension for Chemical Symbol in Multimedia Education Software

多媒体教育软件中化学符号的录入和理解

The chemical symbol for copper is " Cu " .

铜的化学符号是Cu。

What 's the chemical symbol for aluminium ?

铝的化学符号怎么写？

Au is the chemical symbol for gold .

‘Au’是金的化学元素符号。

The chemical symbol is the carrier to express chemical information , and is the basis tool of to learn chemistry .

是表达化学信息的载体，是中学化学学习的基础知识和基本工具。

The chemical symbol is international unified scientific symbol on behalf of the composition and structure of chemical materials , or chemical reaction process .

化学符号是国际上统一规定，用来表示物质结构、组成以及化学反应变化过程的科学符号。

Remember , all you have to do is fill in the one or two-letter abbreviation for the chemical symbol .

记住，你们只要，用一两个字母的缩写，来代表化学元素就可以了。

For junior middle school students , chemical symbol learning is the key stage in learning chemistry , and the teaching practice shows that chemical symbol learning is a key and difficult point of chemistry learning in middle high school , especially point of differentiation of students ' chemical learning .

对初中生来说，化学符号学习是化学学习的关键阶段，教学实践表明，化学符号学习是初中化学学习的一个重难点，特别是学生化学学习的分化点。

In the chemical formula , the symbol for oxygen is O ; for hydrogen , H.

在化学公式中，氧的符号是o，氢是h。

The weed chemical control was the symbol of the modern agriculture development . It was an important measure to save the cost and improve the efficiency of the agriculture , as well as favor the mechanized operation .

杂草化学防治是现代农业的发展标志，它节省劳动力、有利于机械化作业、是节本增效的最重要措施。

Studies On the History of Chemical Languages (ⅰ) & The Birth and Development of Chemical Symbol

化学语言史研究（Ⅰ）&化学符号的产生与发展

With the large numbers of interior decoration , indoor chemical pollutants exceeded aggravation of the problems of modern human has enter a third pollution period with indoor chemical pollution as symbol after the first pollution period-the period of the coal-burning pollution and the second pollution period-photochemical smog pollution .

随着室内装修装饰的大量涌现，室内化学污染物超标现象日趋严重，现代人类已经继第一污染期煤烟型污染和第二污染期光化学烟雾污染后，进入以室内化学污染为标志的第三污染期。