neptunium
音標[nep'tju:ni?m] 讀音漢語翻譯
n. 鎿
【化】 鎿Np
【醫】 鎿(93號元素)
詞型變化：
簡寫符號:Np英文解釋：
名詞 neptunium:
- a radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium同義詞：Np, atomic number 93
詳細解釋：
nep.tu.ni.um
n.Symbol Np （名詞）符號 Np A silvery, metallic, naturally radioactive element, atomic number 93, the first of the transuranium elements. Its longest-lived isotope is Np-237 with a half-life of 2. million years. Found in trace quantities in uranium ores, it is produced synthetically by nuclear reactions.See table at element 鎿：一種銀白色的、金屬性天然放射性元素，原子序數為93，第一個超鈾元素。其周期最長的同位素為Np-237，半衰期為20萬年。見於鈾礦的示蹤量中，由核反應合成生產出來參見 element
來源：After the planet Neptune [from the fact that it follows uranium in the periodic table] 源自 Neptune [來自於在周期表里，從它位於鈾元素之後的事實]
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