Thorium decay series
[化] 钍衰变系
🧩 词语组成解析
n. 钍\\n[化] 钍Th
🗣️ 情景例句
He complained to me about the food.
他向我抱怨伙食不佳。
Paul started with surprise when Jim tapped his shoulder.
当吉姆拍了保罗的肩膀时，保罗吓了一跳。
Firemen had been fighting the forest for nearly three weeks before they could get it under control.
消防队员们同那场森林大火搏斗了将近3个星期才最后把火势控制住。