原子质量

本文比较了室温下每原子质量单位能量相同的As2~+和As~+注入（100）Si所引入的辐射损伤。

The radiation damage of ( 100 ) Si implanted at room temperature by As_2 ~ + andAs ~ + at the same energy for atomic mass unit are compared .

同位素丰度绝对测量及相对原子质量测定中的不确定度评估

Uncertainty Analysis of Absolute Measurement of Isotopic Abundances and Relative Atomic Mass

彭宁阱及汞原子质量的精确测量

The Penning Trap in Mass Measurement of Atoms with Great Precision

他对测量原子质量很精通。

And he was very proficient at measuring atomic mass .

这是12。011克每摩尔，或者12。011原子质量单位。

This is12.011 grams per mole or12.011 atomic mass units , AMU .

相对原子质量的数值计算研究

Study on the numerical calculation of relative atomic mass

测定镁相对原子质量的装置的改进

An Improvement to the Apparatus for Measuring the Relative Atomic Mass of Magnesium

在这些常数（量）中，自然包括元素的相对原子质量。

Some doubtful or unknown relative atomic masses are predictable by statistics method .

我已经向你们展示了原子质量了。

I already showed you the atomic mass .

质量数为什么会大于原子质量

Why are mass numbers more than atomic mass

这是原子质量。

And this is called the atomic mass .

铀的同位素，原子质量数为，能进行持续的连锁反应。

A uranium isotope with mass number 235 ; capable of sustaining chain reactions .

电子的质量是氢原子质量的1850分之一。

The mass of an electron is 1 / 1850 that of a hydrogen atom .

原子质量的精确值是用一种称为质谱仪的装置来测量的。

Precision values of atomic masses are measured in a device called a mass spectroscope .

我会在深入，还会预测它的原子质量是多少。

And I will go even further and will predict what its atomic mass is .

GB/T5113-1985原子质量单位与千克的相互换算表

Atomic mass unit and kilogram conversion tables

早先的化学家只得用间接的方法来确定某种元素的原子质量。

Early chemists had to use indirect means for determining the atomic mass of an element .

那么质量守恒是什么呢？，如果我们在这儿按原子质量划分？

So , what 's the conservation of mass if we divide by the atomic masses here ?

元素，如果按照他们的原子质量来安排，则它展示了一个明显的周期特性。

The elements , if arranged according to their atomic mass , exhibit an evident periodicity of properties .

我想你一定知道原子质量中负荷的不可思议的巨大能量。

I guess you know about the fantastic charge of energy packed in the mass of the atom .

你也可以使用一定范围内元素的密度、原子质量等元素性质来构建图表。

You can plot data for a range of elements for properties like the density or the atomic mass .

（物理学，化学）指原子质量或者原子量大于平均水平的同位素，或者含有这样的同位素。

( physics , chemistry ) being or containing an isotope with greater than average atomic mass or weight .

如果是原子质量一定，电子很小，带正电荷的部分几乎占据了全部质量。

If the atom is fixed mass , the electron is tiny , It must be the positives have all the mass .

具有放射性的钴的同位素，原子质量数为，一种能量极高的伽马放射源，用于放射疗法。

A radioactive isotope of cobalt with mass number 60 ; a source of exceptionally intense gamma rays ; used in radiation therapy .

在分析测定镁相对原子质量的原装置不足的基础上，提出了改进办法。

On the basis of fully analyzing the deficiencies of the old apparatus , the paper gives a practical way to improve it .

作为初步近似，用质量亏损模型讨论了不同吸附原子质量对表面声子的影响。

As a primary approximation , the effects of different adsorbed atom masses on surface phonons are discussed by a simple mass defect model .

双纵栏，你们看到，从氢开始，然后到水银，按原子质量的升序排列。

It is a double column , You can see , it starts with hydrogen and goes to mercury in ascending order of atomic mass .

他发现三元组中间的元素，的原子质量，是位于两端的元素的原子质量，的中间。

And he found that the middle member of the triad had an atomic mass that was midway between the atomic masses of the end members .

锶的放射性同位素（原子质量数为），存在于核爆炸的原子尘中，能象钙一样被吸收到骨中。

A radioactive isotope of strontium ( with the mass number 90 ) that is present in the fallout from nuclear explosions ; can be assimilated like calcium into bones .

其中，当铜锌原子质量百分比约为1：1、铝的原子质量百分含量在5～10%时，催化剂具有良好的催化性能。

When copper and Zinc 's atom mass percent is 1 ∶ 1 and aluminum 's atom mass concentration is 5-10 % Cu-ZnO / Al_2O_3 catalysts have the best performance over SRM reaction .