An element's atomic number is the number of protons in its nucleus.
一种元素的原子序数是其原子核中的质子数。
This is an attempt to reveal the nucleus structure by the method of atomic physics.
这是用原子物理的方法研究原子核问题的有益尝试。
This is an attempt to reveal the nucleus structure by the method of atomic physics.
这是用原子物理的方法研究原子核问题的有益尝试。
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