英语词汇“manganese”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	manganese
释义	Trends of manganese View usage for: manganese (mæŋgəniːz) uncountable noun Manganese is a greyish-white metal that is used in making steel. manganese in British English (ˈmæŋɡəˌniːz) noun a brittle greyish-white metallic element that exists in four allotropic forms, occurring principally in pyrolusite and rhodonite: used in making steel and ferromagnetic alloys. Symbol: Mn; atomic no: 25; atomic wt: 54.93805; valency: 1, 2, 3, 4, 6, or 7; relative density: 7.21–7.44; melting pt: 1246±3°C; boiling pt: 2062°C Word origin C17: via French from Italian manganese, probably altered form of Medieval Latin magnesia manganese in American English (ˈmæŋgəˌnis; ˈmæŋgəˌniz) noun a grayish-white, metallic chemical element, usually hard and brittle, which rusts like iron but is not magnetic: it is used in the manufacture of alloys of iron, aluminum, and copper: symbol, Mn; at. no., 25 Word origin Fr manganèse < It manganese, by metathesis < ML magnesia: see magnesia Word lists with manganese chemical Definition of 'manganese'
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Trends ofmanganese