单词 | neodymium |
释义 | neodymium /nee'oh dim"ee euhm/, n. Chem. a rare-earth, metallic, trivalent element occurring with cerium and other rare-earth metals, and having rose-colored to violet-colored salts. Symbol: Nd; at. wt.: 144.24; at. no.: 60; sp. gr.: 6.9 at 20°C. [1880-85; < NL; see NEO-, DIDYMIUM] |
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