| 单词 | alkaline-earth metal |
| 释义 | alkaline-earth metal (extremely rare) n WORD FAMILY alkaline-earth metal n any of the bivalent metals of group II of the periodic table (calcium or strontium or barium or magnesium or beryllium) Syn|Hyper alkaline earth 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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