Derated
降级的, 已降低额定值的
🗣️ 情景例句
What are you talking about?
你在说什么呀？
I'd like to talk with Mr. Johns or Mr. Smith.
我想与约翰斯先生或史密斯先生谈话。
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。