off adv.表示状态的关闭或离开prep.离开;在...之外adj.空闲的;离开的;关闭的v.离开;脱下
双语例句
The principle and process flow of dewaxing using double membranes were described. 阐述了食用油双膜法脱蜡工艺的技术原理及工艺流程。
The hydrocracked tail oil from hydrocracker in Refining Division of SINOPEC Shanghai Gaoqiao Branch was tested with ketone-benzol dewaxing technology. 加氢裂化尾油经酮苯脱蜡和白土精制工艺可生产高质量润滑油基础油。