| 单词 | atomic number 56 |
| 释义 | atomic number 56 (extremely rare) n WORD FAMILY atomic number 56 n a soft silvery metallic element of the alkali earth group; found in barite Syn|Hypo|Hyper Ba, barium baryta any of several compounds of barium barium hydroxidewhite poisonous crystals; made by dissolving barium oxide in water barium monoxide, barium oxide, barium protoxidean oxide of barium; a whitish toxic powder barium dioxide, barium peroxidea white toxic powder obtained by heating barium oxide in air 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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