英语词汇“francium”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	francium
释义	francium /fran"see euhm/, n. Chem. a radioactive element of the alkali metal group. Symbol: Fr; at. no.: 87. [1945-50; after FRANCE where first identified; see -IUM]
随便看	substory substrate substratosphere substratum substriate substriated substruction substructure subsulcus subsulfate subsulfide subsulphide subsume subsumption subsuperficial subsurety subsurface subsyndicate subsyndication subsynod subsynodal subsynodic subsynodical subsynovial subsystem

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