英语词汇pump-down time怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	pump-down time
释义	pump-down time 简明释义抽真空时间网络释义 1 ?抽气时间 ... 粗抽时间roughing time 抽气时间pump-down time 真空系统时间常数time constant of a vacuum system ... 2 ?抽空时间 ... pumpage 抽运量 pump-down time 抽空时间 pumper apparatus 泵浦消防车 ... 短语 1 pump down time 抽真空时间 2 pump-down n time 抽空时间双语例句 1 Shorter pump down time increases productivity. 减少抽气时间，效率更高。 2 Testing instrument was installed in sampler at heel of hydraulic pump, put into down-hole with pump, and it can examine water cut of formation fluid, save history curves in real time by data memory. 测试仪器安装在水力活塞泵泵芯尾部取样器内，随泵芯投入井下进行测试，可实时检测地层液的含水率情况，利用数据存储器实时保存历史曲线，提供了全天候观测生产过程的手段。
随便看	normal steel normal steel casting normal steering normal stereo normal stereographic projection normal stiffness normal stochastic process normal stock normal stock method normal stock policy normal stop normal stoppage normal storage high water level normal straight blades snips Normal straight line walking test normal strain normal strain normal strata normal stratigraphic sequence normal strength hull-structural steel normal strength yarn normal stress normal stress normal stress coefficient normal stress difference

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