| 单词 | yttrium |
| 释义 | yttrium —yttric, adj. /i"tree euhm/, n. Chem. a rare trivalent metallic element, found in gadolinite and other minerals. Symbol: Y; at. wt.: 88.905; at. no.: 39; sp. gr.: 4.47. Cf. rare-earth element. [1815-25; < NL, named after Ytterby. See YTTERBIA, -IUM] |
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