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pitchblende 音標拼音: [p'ɪtʃbl,ɛnd] n. 瀝青油礦 瀝青油礦 pitchblende n 1: a mineral consisting of uranium oxide and trace amounts of radium and thorium and polonium and lead and helium; uraninite in massive form is called pitchblende which is the chief uranium ore [synonym: {uraninite}, {pitchblende}] Pitchblende \Pitch"blende`\, n. [1st pitch blende.] (Min.)
A pitch-black mineral consisting chiefly of the oxide of uranium; uraninite. See {Uraninite}. [1913 Webster]
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