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单词 relative atomic mass
释义

relative atomic mass

英汉-汉英词典
相对原子质量
词组 | 习惯用语
您要查找的是不是：
    The relative atomic mass 相对原子质量
    average relative atomic mass 平均相对原子质量
relative atomic mass [物化] 相对原子质量
原声例句
化学 Crash Course

But the relative atomic mass does change.

但是相对原子质量确实发生了变化。

Crash Course 综合篇

Which means that carbon has a relative atomic mass of 12.01 amu.

这意味着碳的相对原子质量为 12. 01 amu。

化学 Crash Course

The relative atomic mass, then, ends up being about halfway between 107 and 109, 107.8682.

然后，相对原子质量最终约为 107 和 109 之间的一半， 即 107. 8682。

Crash Course 综合篇

The real coin of the realm when it comes to measuring stuff in chemistry is relative atomic mass.

在测量化学中的东西时， 真正的硬币是相对原子质量。

Crash Course 综合篇

So the relative atomic mass of carbon is a weighted average of these three masses, which comes out to 12.01.

所以碳的相对原子质量是这三个质量的加权平均值， 结果为 12. 01。

英语百科

Relative atomic mass

The atomic number of hydrogen is 1. The standard atomic weight of hydrogen is 1.008 (this value is not given here as an expectation interval, as it is in elements below). Atomic weight is the same as relative atomic mass. The atomic weights of samples of hydrogen will vary according to their content of heavy hydrogen (deuterium), and this will in turn depend upon where the samples are collected.
Excerpt of the IUPAC Periodic Table of the Elements showing the interval notation of the standard atomic weights of boron, carbon, and nitrogen (Chemistry International, IUPAC). Example: the pie chart for boron shows it to be composed of about 20% 10B and 80% 11B. This isotope mix causes the standard atomic weight of ordinary Earthly boron samples to be expected to fall within the interval 10.806 to 10.821. Boron samples from unusual sources, particularly non-terrestrial sources, might have measured atomic weights that fall outside this range. Atomic weight and relative atomic mass are synonyms.

Relative atomic mass (symbol: Ar) is a dimensionless physical quantity, the ratio of the average mass of atoms of an element (from a single given sample or source) to ⁄12 of the mass of an atom of carbon-12 (known as the unified atomic mass unit). The relative atomic mass is a statistical term, referring to an abundance-weighted figure involving measurement of many atoms. As in all related terms, the word "relative" refers to making the figure relative to carbon-12, so that the final figure is dimensionless.

近义、反义、联想词
近义词
n.
mass

英英词典
relative atomic mass n.
  1. (chemistry) the ratio of the atomic mass of an element to half the atomic mass of carbon

    2. synonymous： atomic weight
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更新时间：2025/6/20 19:28:14