葡萄糖和果糖具有相同的化学分子式但有很不同的特性。
Glucose and fructose have the same chemical formula but have very different properties.
前一个分子式的形式得到正式表述。
二氧化碳的分子式是co2。
测得的准确分子量与具体的分子式完全吻合。
The precise molecular weight that is measured can be uniquely associated with a specific moleculer formular.
在反应式的左侧我们写上全部反应物的分子式。
On the left of the equation we write the molecular formulas of all the ingredients or reactants.
凡具相同分子式但不同结构式的物质称为异构体。
Substances which have identical molecular formulas but different strucural formulas, are known as isomers.
分子式C6H14只用来表示碳原子和氢原子的总数。
The molecular formula, C6H14, does not show anything except the total number of carbon and hydrogen atoms.
文中给出将分子式文件存入数据库的程序流程的示例。
The program of molecular structure storage in databases is presented with example in this paper.
分子式c 6h14只用来表示碳原子和氢原子的总数。
Thee molecular formula, C6H14, does not show anything except the total number of carbon and hydrogen atoms.
在确定一个化合物的结构式之前，首先应知道它的分子式。
Before we can assign a structural formula to a compound, we must first know its molecular formula.
氢气的分子式为H2，它是一种无色、无溴和无味的气体。
Hydrogen is referred to as H2. It is a colourless, odourless and tasteless gas.
类似的，分子式中的下标是在元素符号后边的，而不是前边。
Similarly, molecular formulas have to have subscripts after the element name, not before.
提出一个只由正常沸点和分子式估算烃类物质蒸气压的方法。
A method of predicting vapor pressures of hydrocarbons from the normal boiling points and the molecular formulas is proposed.
重要的是记住分子式是代表中性化合物，正负电荷加和为零。
What is important to remember is that the formulas represent neutral compounds where the positive and negative charges add to zero.
实际计算中是把组成该物质分子式的各原子的原子量求和而得。
It is calculated in practice by summing the atomic weights of the atoms making up the substance's molecular formula.
化合物的分子式提供了组成该化合物分子种原子的种类及其数量的信息。
The formula of a compound gives information about the kinds and numbers of atoms that make up each molecule of that compound.
不管什么物质，只要知道其分子式，就能计算出与分子式相应的质量。
For any substances whose formula is known, a mass corresponding to the formula can be computed.
一种甾醇，分子式为C29 H48o，从大豆或卡拉巴豆中提取。
A sterol, C29H 48o, obtained from soybeans or Calabar beans.
他们的目标是到2010年这些分子式中至少有一种能完成它们的行程。
The aim is to have at least one of these molecules complete the journey by 2010 .
所以，上面所展示的一个组别的分子式不过就是全部的DNA分子的一小部分。
The unit shown above, therefore, is no more than a small portion of the whole DNA molecule.
羟基是分子式是HO，水分子式是H 2 O，羟基通常是水分子分解后的产物。
Hydroxyl is HO, as opposed to water's H2O, and it is usually the result of water molecules decomposing.
异丁基铵黑药和正丁基铵黑药是同分异构体，它们有相同的分子式，只烷基异构。
Ammonium di-iso-butyl dithiophosphate and ammonium din-butyl dithiophosphate is isobutyl isomers, they have the same molecular formula, only alkyl isomers.
结果表明，采用模拟的平均分子式作为平衡项处理，测定结果与给出的标准值吻合。
The result shows that the measurement results agree well with standard values by choosing simulative average molecular formula on balance.
面对着这些纷繁的分子式，他不知如何是好，因为他对它们一窍不通，他是学艺术的。
Facing thees numerous and complicated molecular formula, he doesn't know what to do, because he is a layman to them. His major is art.
固态、液态和气态在化学性质上彼此没有差别，都是由分子式为H2O的分子构成的。
Chemically there is no difference between the gas, the liquid, and the solid, all of which are made of molecules with formula H2O. And this is true of other chemical substances.
然而由活的有机体产生的绝大多数天然碳水化合物的组成不遵守这个简单的经验分子式。
However the great majority of natural carbohydrate compounds produced by living organisms do not have this simple empirical formula.
然而由活的有机体产生的绝大多数天然碳水化合物的组成不遵守这个简单的经验分子式。
However, the great majority of natural carbohydrate compounds produced by living organisms DO not have this simple empirical formula.
我们知道，一个水分子是由两个氢原子和一个氧原子组成的，它的分子式表示为h2o。
We have learned that water is made up of two atoms of hydrogen and one atom of oxygen, which we describe by the formula H2O.
我们知道，一个水分子是由两个氢原子和一个氧原子组成的，它的分子式表示为h2o。
We have learned that water is made up of two atoms of hydrogen and one atom of oxygen, which we describe by the formula H2O.
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