Percarbide
[化] 过碳化物
🗣️ 情景例句
Glad to see you too, we met two years ago.
我也很高兴，我们两年前见过一次。
A little spark kindles a great fire.
星星之火，可以燎原。
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。