英语词汇pre vacuum pump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	pre vacuum pump
释义	pre vacuum pump 简明释义预备真空泵网络释义 1 ?预备真空泵 ... pre vacuum 初真空 pre vacuum pump 预备真空泵 preacceleration 预加速 ... 2 ?预真空泵 ... pre op test 运行前试验 pre vacuum pump 预真空泵 preacceleration 预加速 ... 短语 1 pre ure vacuum pump 真空压力泵 2 low pre ure vacuum pump 高真空泵 3 vacuum pre ure pump 真空压力泵双语例句 1 The set takes Roots pump as its main pump and spinning vacuum pump as pre-stage pump. 本机组采用罗茨泵作为主泵，以旋片式真空泵作为前级泵。 2 In between, an electromagnetic vacuum inflation valve is installed in series, which opens and closes with the switch of the pre-stage pump. 在前级泵与主泵中间串联一个电磁真空充气阀，随前级泵开关而启闭。
随便看	os turbinatum Ostwald ostwald color circle ostwald color pyramid Ostwald color system ostwald curve ostwald decade rheostat Ostwald-de-Waele fluid ostwald-de waele model Ostwald diagram Ostwald dilution law ostwald equation Ostwald Folin pipet Ostwald-Folin pipet ostwaldfolin viscosimeter Ostwald-Folin viscosimeter ostwald folin viscosimeter Ostwald-Folin volumetric pipette Ostwald Folin volumetric pipette ostwald glass capillary viscometer Ostwald indicator theory ostwaldite ostwald law Ostwald pipet ostwald pipette

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