francium
音標(biāo)['fr?nsi?m]
francium是什么意思、francium怎么讀
francium漢語(yǔ)翻譯
n. 鈁
【化】 鈁
【醫(yī)】 鈁(87號(hào)元素)
【化】 鈁
【醫(yī)】 鈁(87號(hào)元素)
francium詞型變化
簡(jiǎn)寫(xiě)符號(hào):Fr
francium英語(yǔ)解釋
名詞 francium:
- a radioactive element of the alkali-metal group discovered as a disintegration product of actinium同義詞：Fr, atomic number 87
francium詳細(xì)解釋
fran.ci.um
n.Symbol Fr （名詞）符號(hào) Fr An extremely unstable radioactive element of the alkali metals, produced artificially from actinum or thorium, having approximately 9 isotopes, the most stable of which is Fr 223 with a half-life of 2 minutes. Atomic number 87; valence .See table at element 鈁：從堿金屬錒或釷中人工提煉出的一種極不穩(wěn)定的放射線元素，約有9種同位素，其中最穩(wěn)定的是半衰期為2分鐘的Fr223。原子序數(shù)為87；化合價(jià)為參見(jiàn) element
來(lái)源：After France 源自 France
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