What if I operate my pump at a very low level for sump cleanout purposes?如果为了清理污水坑,我不得不使泵运行在低水位,这时会出现什么情况?I have a file cleanout day scheduled in my tickler file or calendar a year.在我的提示系统或日程表中安排每一年有几天专门清算文件.I’ve just gi...
这个机理的特殊情况就是 所谓 的筛分效应.A special case of this mechanism is the so - called sieve effect.这些方法有碎磨 、 筛分 、 混匀 、 选矿以及粉矿造块等.These processes include comminution, screening, blending , concentration , and further more, agglomerati...
The diaphragm vibrates , thus setting the air around it in motion.膜片振动,这使得周围的空气也动荡起来.Her heart vibrates with excitement.她的心因兴奋而悸动.The house vibrates when a train passes.火车经过时房屋震动....