Prince Michael of Kent presented the prizes.肯特亲王迈克尔颁发了奖品。Both firms are based in Kent.两个公司的总部都设在肯特市。Kent's going for the tennis championship this year.肯特竭力想获得今年的网球冠军....
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...