| 单词 | barium |
| 释义 | barium /bair"ee euhm, bar"-/, n. Chem. a whitish, malleable, active, divalent, metallic element, occurring in combination chiefly as barite or as witherite. Symbol: Ba; at. wt.: 137.34; at. no.: 56; sp. gr.: 3.5 at 20°C. [1800-10; BAR(YTES) + -IUM] |
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