Plaper
[化] 塑料纸
🗣️ 情景例句
OK, Marilyn.
好了， Marilyn
Take care and give my by best to your parents.
多保重，代我向你的父母问候。
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。