normal rundown time history怎么理解? Therefore once that a pump has been operating in a new system ,the rotor shall not be turned by hand ,as it may cause pick-up on and embedding of particles ,but rather started directly based on normal rundown time history. 这段话中“but rather started directly based on normal rundown time history”是什么意思? 前面部分我个人翻译如下: “因此一旦泵在新系统中开始运转,由于可能会带入颗粒,转子不能用手转动,” PS:这段话是在泵的使用说明中摘出来的。 请高手帮忙看看,谢谢! 查看更多1个回答 . 3人已关注