The physical properties of rubber accelerator 2 - mercapto benzothiazole and main methods for its preparation are introduced.介绍橡胶硫化促进剂 2- 巯基苯并噻唑的物理性质和主要的制备方法.He eased his foot off the accelerator.他松开了油门。Today many radioi...
He ensconced himself in the closet in order to eavesdrop.他藏在壁橱里,以便偷听.Walking slowly because you're afraid we'll eavesdrop, aren't you? "走得慢吞吞的,怕我们听见, 是不是? ”I didn't mean to eavesdrop but I heard what&...