high pressure vacuum pump 高真空泵
oil feed pressure vacuum pump 进油压力真空泵
low-pressure vacuum pump 高级真空泵
hellogh pressure vacuum pump 高抽气机
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
Vacuum pressure combined pump 真空压力复合气泵
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。
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。
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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