The invention relates to a acid tromethamine salt , of which the formula is C 18 H 23 NO 5.

The simplest ratio of the ions in the crystal is known as the formula unit.

离子晶体的单位化学式就是其中不同离子间的最简比.

He can never write chemical formulas correctly for chemical reactions.

他总是不能准确地写出化学反应的化学式.

Teacher: Donald, what is the chemical formula for water?

老师: 唐纳, 水的化学公式是什么?

Hull construction's materials & scantling designs are to be complied with the rules of Classification Society.

船体结构的材料 及 构件尺寸设计应满足船级社规范要求.

Scantling of plates and sections will be in accordance with rules requirements and Builder's practice.

一些板和部件的结构尺寸必须根据规范要求和建造者的惯例.

There are many ways to keep the chemical equation of many group Balancing coefficient balance.

多组配平系数方程式的配平,方法较多.

Don't you find it upsetting to reduce an emotion like love to a chemical equation?

你不认为将爱情这种情感降低为一种化学方程式有些扫兴 吗 ?

One should clearly state the visible change and write down the chemical equation involved.

须清楚写出可见变化和有关的方程式.

I little realised at the time what a tremendously false step mine had been!

那时我一点也没意识到我跳的是多么错误的一步 啊 !

He was tempted into making a false step.

他被人引诱去做了一件蠢事.

A false step brought her suddenly to the ground.

一次失足突然让她跌到地上.

He who has learnt to dance correctly never makes a false step.

已学会正确跳舞的他从未犯过错误.

A false step will make a great difference to your future.

错走一步对你的前程来说会产生很大影响.

Onece you take a false step, you will lose his favor.

一旦你行动失误, 他就会对你不再有好感.

A false step will make a great difference to my future.

错走一步对我的前程来说会产生很大影响.

A false step can cost us millions of dollars.

一步失策会使我们损失几百万美元.

Application of the basic theorem of a system of linear equation to balancing chemical reaction equation-The improvement on linear algebra method

线性方程组的基本理论在配平化学方程式中的应用&改进的线性代数法

For sure, anybody can see the zeros, or take note of slogans such as the debt burden is rising by x a year, in much the same way, say, that anyone can take note of a chemical equation behind greenhouse gases.

当然，谁都能看到一长串零，或者记住债务负担正以每年x%的增幅扶摇直上的标语，这就像每个人都能留意到温室气体背后的化学方程式一样。

A program of balancing chemical equations and ionic equations

配平化学方程式和离子方程式的程序设计

In order to balance a chemical equation it is essential that it represent a reaction in true manner.

为了配平一个化学方程式，必须如实表达反应情况。