单词 | yttrium |
释义 | yttrium (once / 181836 pages) n WORD FAMILY yttrium USAGE EXAMPLESYttrium and neodymium are alloyed to make the magnets in turbines for windmills. National Geographic(Jun 10, 2016) The Earth contains a great deal of iron and rather little yttrium. Carl Sagan, Cosmos(1980) Most fluorescent lights contain europium, yttrium and terbium, for example, and strong permanent magnets typically contain neodymium and dysprosium. Nature(Apr 21, 2015) n a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloys Syn|Hyper Y, atomic number 39 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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