Disengager
選別器, 斷開器lift disengager 催化劑 提升器上部料斗(移動床催化裂化的)
??? 情景例句
Thank you.
謝謝 。
Will you plan to join me for dinner?
你要跟我一起吃飯嗎？
The first sign of disaster was a dead sheep floating down.Next came a horse, swimming bravely,
災(zāi)難的第一跡象是一只死羊順流而下，接著一匹活馬勇敢地與水搏擊。