关闭气源开关,让循环泵停止工作.Turn off the gas resource and the circulating pump will stop working.2关闭中循环阀门,停循环泵.Close the middle circulating valve and stop the circulating pump.启动循环泵.Start up the circulating pump....

“循环泵”的英语可以翻译为：[化] circulating pump，circulation pump，recirculating pump，recycle pump ...