铀

Most branches of Irtysh River have little been impacted by human activities so uranium and thorium levels are much lower than that in the main stream.

额尔齐斯河主河道水中铀明显受人为活动影响，向下游呈增高趋势。

He fell in love with Irène Curie, and soon after their marriage in 1926 they both changed their surnames to Joliot-Curie.

先前他曾在居里实验室和妻子何泽慧合作，发现了铀核的三分裂和四分裂现象。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。