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- Radium and uranium are radioactive elements. 镭和铀是放射性元素。
- uranium decay series 铀蜕变系
- actino uranium decay series 锕铀衰变系
- a radioactive decay series; the paraffin alkane series. 放射性蜕变的系列;链烷烃系列
- radon from radium decay of a radioactive inert gases come from the chemical nature of speaking, radon is colourless; 氡气是从放射性元素镭衰变而来的一种放射性惰性气体,从化学性质上讲,氡气是无色无味的;
- Keywords interstratified oxidized zone type sandstone uranium deposit;uranium radium equilibrium;radon measurement;radioactive; 层间氧化带型砂岩铀矿;铀镭平衡;氡法测量;放射性;
- What made the Roman Empire decay? 罗马帝国为何衰亡?
- The parent uranium has been partitioned from its decay products. 铀母体与其衰变产物分离。
- A proof of the secular equilibrium formula in radioactive cascade decay series 放射性递次衰变系列中长期平衡公式的证明
- Old civilization may fall into decay. 古老的文化可能会渐渐衰落下去。
- The empty house has fallen into decay. 那座空房已成一片颓垣。
- The tree exhibited signs of decay. 那棵树显示腐蛀的迹象。
- A series of provocations led up to the border war. 一系列的挑衅事件导致了边境战争的发生。
- A yellow ore of uranium and radium with composition K(UO2)2(VO4)2?H2O. 钒钾铀矿一种铀和镭混合的黄色矿床,K(UO2)2(VO4)2?H2O
- He rapped out a series of curt commands. 他大声发出了一连串简短的命令。
- His mental decay is distressing. 他的智力衰退令人苦恼。
- Growth and decay are vital processes. 生长和衰亡是生命过程。
- Her story was nothing but a series of fabrications. 她说的完全都是编造的。
- The dentist could detect no decay in her teeth. 牙医检查了她的牙,未见有龋齿。
- A yellow ore of uranium and radium with composition K(UO2)2(VO4)2?2O. 钒钾铀矿一种铀和镭混合的黄色矿床,K(UO2)2(VO4)2?2O