| 单词 | pitchblende |
| 释义 | Word Frequency pitchblende(ˈpɪtʃˌblɛnd) noun a blackish mineral that is a type of uraninite and occurs in veins, frequently associated with silver: the principal source of uranium and radium. Formula: UO2 Word origin C18: partial translation of German Pechblende, from Pech pitch2 (from its black colour) + blende |
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