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1 ?真空压力泵 ... Vacuum pressure combined pump 真空压力复合气泵 vacuum pressure pump 真空压力泵 ; 无油真空泵 vacuum and pressure air pump 抽空压气两用泵 ... 2 ?无油真空泵 无油真空泵 （ vacuum pressure pump ）, 无油真空泵 （ vacuum pressure pump ）,供应,实验室常用设备,泵,真空泵..
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I believe molding two halves with a vacuum pump to provide pressure will produce a better structure and allow me to better control wall thickness. 我认为两半的模具加上真空泵来提供压力能使结构更好，我也能更好的控制壁厚。 - 2
Sprinkler pump shell cracks, or impeller, leaf damage, or seal damage, will affect the degree of vacuum, water pumping, water pressure is too small or the phenomenon. 洒水车水泵泵壳出现裂纹、或者叶轮、倒叶损坏、或者水封破损，都会影响真空度，出现水抽不上来，或者水压过小的现象。 - 3
Connect the vacuum pump to the compound pressure gauge; open the compound pressure gauge and vacuum pump to vacuum the indoor unit and connecting pipe. 将真空泵连于复合压力表，打开复合压力表和真空泵对室内机和连接管抽真空。
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