单词atomic number
na.: 【化】原子序数
网络: 原子数；原子序号；原子量
原子序数（指原子在元素周期表中的序号）:
the number of protons in the nucleus (= centre) of an atom, which is characteristic of a chemical element. Elements are placed in the periodic table according to their atomic numbers .
原子质量单位
【化学】原子序数
And the prediction was that the element with that atomic number existed somewhere, but it just hadn"t been found yet.
那么，预言就是，那个原子序数的元素是存在的，只是没有被发现。
No change in atomic number is possible without a radical change in properties .
性质不发生根本的改变，原子序数的改变是不可能的。
The probability of a specific interaction occurring depends on the atomic number of the material and the energy of the gamma ray.
发生特殊相互作用的可能性和物质的原子量以及伽马射线的能量有关。
Conclusion The effective average atomic number of energy spectrum CT can precisely determine the chemical composition of calculus.
结论能谱CT测定结石平均有效原子序数可以较准确判定结石化学成分。
Atomic number of the material used as target is the most fundamental factor which affects X-ray production and conversion efficiency.
靶材，即原子序数的选取是决定产生这一波段辐射的基本因素。
To the chemist the "kind" of atom is specified by its atomic number, since this is the property that determines its chemical behavior.
对“类”药剂师的原子序数指定它，因为它的性质是决定其化学行为的影响。
Chromium: Metallic chemical element, one of the transition elements, chemical symbol Cr, atomic number 24.
铬：周期表VIb族金属化学元素，是过渡元素元素之一，化学符号Cr，原子序数24。
Isotopes are forms of a chemical element whose nuclei have the same atomic number, Z, but different atomic masses, A.
同位素是指原子核包含的质子数相同而原子质量不同的化学元素。
Silver: Metallic chemical element, one of the transition elements, chemical symbol Ag, atomic number 47.
银：金属化学元素，过渡元素之一，化学符号Ag，原子序数47。
Nickel Metallic chemical element, one of the transition elements, chemical symbol Ni , atomic number 28.
金属化学元素，过渡元素之一，化学符号ni，原子序数28。