单词 | uraninite |
释义 | u·ra·ni·nite ![]() n. A complex brownish-black mineral, UO2, forming the chief ore of uranium and containing variable amounts of radium, lead, thorium, and other elements. It is isomorphous with thorianite. [German Uranin (from New Latin ūranium, uranium; see URANIUM) + -ITE1.] |
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