Pitchblende and chalcolite are much more radioactive than uranium itself.沥清铀矿和铜铀云母比纯铀的放射性强得多.Chalcolite ( crystallized phosphate of copper and uranium ) is about twice as radioactive as uranium.铜铀云母 ( 铜和铀的磷酸盐结晶体 ) 的放射性是铀...

chalcolite的音标：chalcolite的英式发音音标为：['kælkəlaɪt]chalcolite的美式发音音标为：['kælkəlaɪt]...

n.铜铀云母...