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plutonium

音標[plu:'t?uni?m] 讀音

漢語翻譯


n. 鈽
【化】 鈽Pu
【醫】 鈽(94號元素)

詞型變化:

簡寫符號:Pu 

英文解釋:

名詞 plutonium:

  1. a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons; found in minute quantities in uranium ores but is usually synthesized in nuclear reactors; 13 isotopes are known with the most important being plutonium 239
    同義詞:Pu, atomic number 94

詳細解釋:


plu.to.ni.um

n.Symbol Pu (名詞)符號 Pu
A naturally radioactive, silvery, metallic transuranic element, occurring in uranium ores and produced artificially by neutron bombardment of uranium. Its longest-lived isotope is Pu 244 with a half-life of 7' million years. It is a radiological poison, specifically absorbed by bone marrow, and is used, especially the highly fissionable isotope Pu 239, as a reactor fuel and in nuclear weapons. Atomic number 94; melting point '40=C; boiling point 3,235=C; specific gravity 9.84; valence 3, 4, 5, '.See table at element
鈽:一種天然地放射性銀色超鈾金屬元素,存在於鈾礦中,對鈾元素進行中子轟擊而人工製成。其存在周期最長的同位素是半衰期為七千六百萬年的鈽244,它是一種核輻射毒素,特別是能被骨髓吸收。尤其是其極具可裂變性的同位素鈽239,被用作一種核反應燃料並用在核武器中。原子序數94;熔點'40=C;沸點3,235=C;比重9.84;化合價3, 4, 5, '參見 element

來源:
After the planet Pluto [from the fact that it follows neptunium in the periodic table]
源自 Pluto [源於該元素在元素周期表中排在錸之後這一事實]

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