全部

1·Radium is a radioactive element.

镭是一种放射性元素。

2·Radium is a radioactive element.

镭是个放射性元素。

3·Radioactive Element Detected Near Nuclear plant.

核电站附近发现辐射性元素。

4·Polonium is a highly radioactive element and a metalloid.

钋是高放射性的元素，金属。

5·This radioactive element has a half-life of some 5, 700 years.

这种放射性元素半衰期约为5700年。

6·Because you have to know how much of radioactive element you have in those systems.

因为你必须知道有多少放射性元素在这些系统中。

7·That essentially means that it uses a radioactive element called americium-241 to spot smoke or harmful gasses.

从字面上可以了解到，它采用放射性元素镅241来探测烟雾或者有害气体。

8·The water temperature originates in geothermy warming rate and the radioactive element decay has the heat energy.

水温来源于地热增温率及放射元素的衰变产生热能。

9·He said detection of the radioactive element caesium outside the No.1 reactor today was a bad sign for a core meltdown.

他说今天在第一核电站检测到放射性元素铯，这是核心融化的不好迹象。

10·They had been interested in thorium — a radioactive element that can fuel nuclear reactors but not be processed into weapons.

他们当时对一种放射性元素钍很感兴趣，这种元素能驱动核反应堆，却不能制造生产成武器。