英语词汇“atomic number 57”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	atomic number 57
释义	atomic number 57 (extremely rare) n WORD FAMILY atomic number 57 n a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth Syn\|Hyper La, lanthanum metal, metallic element any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
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