柯林斯詞典atomic number 1. N the number of protons in the nucleus of an atom of an element 原子序數(shù) ( abbr: at. no. symbol: Also called proton number) 返回 atomic number劍橋詞典the number of protons found in the nucleus of an atom of a particular chemical , used as a way of listing the chemical elements in order in the periodic table 原子數(shù)(某種化學(xué)物質(zhì)的原子核中質(zhì)子的數(shù)量,用于化學(xué)元素周期表中的排序) 返回 atomic number