against的翻译? gpm--gallon per minute scfm--standard cubic feet per minute psig就不用解释了哈 ahh, i hate imperial units! to pump 42gpm against a discharge pressure head of 40 psig requires 60psig and 24scfm air consumption. 出口压力40psig下,泵流量为42gpm时,需消耗60psig,24scfm的空气。 不知是哪里消耗的空气,应该不是泵入口的。查看更多