| 单词 | atomic number 82 |
| 释义 | atomic number 82 (extremely rare) n WORD FAMILY atomic number 82 n a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey Syn|Hypo|Hyper Pb, lead hard lead unrefined lead that is hard because of the impurities it contains antimonial lead, hard leada lead alloy that contains about 5% antimony pig leadlead that is cast in pigs grid metala kind of hard lead that is used for grids in storage batteries 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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