詞語：neptunium
neptunium的同義詞
n. atomic number 93 ，np
neptunium的解釋
neptunium[nep'tju:niəm]n. [化]拿
neptunium的意思
Neptunium 拿;錼;neptunium family 拿族;拿系;neptunium series 拿族;拿系;錼系;neptunium oxide 氧化拿;triscyclopentadienyl neptunium fluoride 三茂拿氟化物;
neptunium的參考例句
1.Only two, neptunium (93) and plutonium (94), occur in nature, and only as traces in uranium ores as a result of neutron irradiation. 自然界裡只有錼（93）和鈽（94）兩種超鈾元素，而且只以痕量存在於鈾的礦物中，是受中子輻照後的產物。
2.The method including the process of extraction chromatography and the mass spectrum measurement for the exact analysis of micro neptunium in the existence of large quantity of uranium is established. 建立了準確測定常量鈾中微量拿的方法。方法包括萃取色層法分離和質譜法測量。