单词 | atomic number 50 |
释义 | atomic number 50 (extremely rare) n WORD FAMILY atomic number 50 n a silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide Syn|Hyper Sn, tin 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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