| 单词 | tantalum |
| 释义 | tantalum /tan"tl euhm/, n. Chem. a gray, hard, rare, metallic element occurring in columbite and tantalite and usually associated with niobium: used, because of its resistance to corrosion by most acids, for chemical, dental, and surgical instruments and apparatus. Symbol: Ta; at. wt.: 180.948; at. no.: 73; sp. gr.: 16.6. [1795-1805; < NL; named after TANTALUS] |
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