“铀云母”造句

沥清铀矿和铜铀云母比纯铀的放射性强得多.
Pitchblende and chalcolite are much more radioactive than uranium itself.

铜铀云母 ( 铜和铀的磷酸盐结晶体 ) 的放射性是铀放射性的两倍.
Chalcolite ( crystallized phosphate of copper and uranium ) is about twice as radioactive as uranium.