| 单词 | thoria |
| 释义 | thoria /thawr"ee euh, thohr"-/, n. Chem. a white, heavy, water-insoluble powder, ThO2, used chiefly in incandescent mantles, as the Welsbach gas mantle. Also called thorium oxide, thorium dioxide. [1835-45; THORI(UM) + -A4] |
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