Decay series
[化] 衰变系; 放射系
🧩 词语组成解析
🗣️ 情景例句
Yes?
真的？
You'll get hurt, if you don't watch out.
你不注意的话，就会受伤。
and we control it by means of the mud which we circulate down the drill pipe.
我们让泥浆顺着钻杆向下循环，用这种方法来控制压力。