Photocorrector
摄影改正器
🗣️ 情景例句
He likes that.
他喜欢那样。
He must have been an outstanding student.
他一定是个优秀学生。
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。