钍射气

例句：

1. 1.The thoron was detected in the atmosphere during the test flight.
   在这次试飞中，检测到了大气中的钍射气。
2. 2.The thoron is a byproduct of nuclear power plants.
   钍射气是核电站的副产品。
3. 3. The thoron can be used to detect radiation leaks in buildings.
   钍射气可以用来检测建筑物中的辐射泄漏。