单词 | thulium |
释义 | thulium /thooh"lee euhm/, n. Chem. a rare-earth metallic element found in the minerals euxenite, gadolinite, etc. Symbol: Tm; at. wt.: 168.934; at. no.: 69; sp. gr.: 9.32. [1875-80; < NL; see THULE, -IUM] |
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