stand-by pump 待机备用泵 ; 备用
starting up stand-by pump 起动备用泵
stand by pump 备用泵
stand-by pump coupling 备用泵联轴器 ; 备用
starting up stand-by pump coupling 起动备用泵联轴器
warehouse stand by pump 仓库备用泵
stand-by circulating pump 备用循环泵 ; 备用轮回泵
stand-by oil pump 候用油泵
Both water inlet and outlet pipelines should be supported by a separate stand and not by the pump body.
进出水管路应另设支架支撑，不得籍泵本体支撑。
Stop the pump, close the column outlet and remove the packing reservoir. This is most easily done by first removing the column from the stand and then unscrewing the reservoir over a sink.
停止泵压，关闭柱的出口，去除填压用的贮液器。首先从试管架上卸下柱体，然后从槽上拧下贮液器，这样就很容易完成。
As for the existing benzene-spurting for the stand-by distillating pump since test running, we analyse it from the aspects of operation and design and raise the corresponding innovative approach.
针对精苯装置预备蒸馏系自投料生产以来存在的喷苯现象，从操作和设计等方面进行原因分析并采取相应的改进措施。
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