音标与读法

这里为大家介绍下mass number 是什么意思，希望能帮助到各位朋友。

中英文翻译

【物、化】(原子)质量数。

mass:n. 1.块，堆，团。 2.群众，集团；〔the mas ...number:n. 1.数；数字；〔pl.〕算术。 2.(汽车等的)号 ...the sum of the number of neutrons and protons in an atomic nucleus

同义词：nucleon number,

The mass number (A), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. Because protons and neutrons both are baryons, the mass number A is identical with the baryon number B as of the nucleus as of the whole atom or ion.

例句与用法

1.Binding energy per nucleon as a function of mass number total number of protons and neutrons

原子核的比结合能与质量数质子和中子总数的关系图

2.Where a is the mass number equal to the numbers of protons plus the number of neutrons in the nucleus , z is the atomic number equal to the number of protons in the nucleus , x is the chemical symbol of the atom

表示， a是质量数，是原子核内的质子及中子数目总和。 z是原子序数，等于质子的数目。 x是原子的化学符号。

3.Where a is the mass number equal to the numbers of protons plus the number of neutrons in the nucleus , z is the atomic number equal to the number of protons in the nucleus , x is the chemical symbol of the atom

表示， a是质量数，是原子核内的质子及中子数目总和。 z是原子序数，等于质子的数目。 x是原子的化学符号。

4.In other words , the same amount of energy will be given off when stand - alone nucleons come together to form the nucleus . when the binding energy per nucleon is plotted against the mass number , i . e . total number of protons and neutrons in a nucleus the bottom right figure , it is found that the curve peaks around the mass number 56 , i . e . the iron nucleus

如果把原子核内每颗核粒子的平均结合能又称比结合能与质量数原子核中的质子和中子的总数绘制成图右下图，便可发现图中曲线在质量数大约等于56即铁原子核时到达最高点，即是铁原子核的总体能量最低。

5.In other words , the same amount of energy will be given off when stand - alone nucleons come together to form the nucleus . when the binding energy per nucleon is plotted against the mass number , i . e . total number of protons and neutrons in a nucleus ( the bottom right figure ) , it is found that the curve peaks around the mass number 56 , i . e . the iron nucleus

如果把原子核内每颗核粒子的平均结合能(又称比结合能)与质量数(原子核中的质子和中子的总数)绘制成图(右下图) ，便可发现图中曲线在质量数大约等于56 (即铁原子核)时到达最高点，即是铁原子核的总体能量最低。

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