third radiation belt

• 第三辐射带

third radiation belt的用法和样例：

例句

1. The Van Allen radiation belts that encircle our planet were temporarily eliminated, and huge numbers of protons and electrons were dumped into the upper atmosphere.
   环绕地球的范艾伦辐射带暂时消失，大量质子与电子被灌入高层大气。