常見例句雙語例句Mechanics research on chief draining pump cavitation damage in coal mine;在煤礦井下的排水系統(tǒng)中，需要多臺排水泵協(xié)調(diào)地工作。This paper also carefully introduces a way and path to keep economic operation for chief draining pump in coal mine underground.詳細(xì)地闡述了保持煤礦井下大泵經(jīng)濟(jì)運(yùn)行的途徑和方法。The single-phase vertical draining pump has reasonable structure, stable performances, convenient use and wide scope of application, and the use length can be set according to demands.本實(shí)用新型結(jié)構(gòu)合 理，性能穩(wěn)定，使用方便，適用范圍廣，使用長度可根據(jù)需要任定。ip.com 返回 draining pump