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Inside the cabinet are an air compressor and a vacuum pump.
盒子内部是一台空气压缩机和一台真空泵。
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Water ring vacuum pump in the waste water and air into the tank together.
水环式真空泵中废弃的水和空气一起被排到水箱里。
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Water ring vacuum pump in the waste water and air into the tank together.
水环式真空泵中废弃的水和空气一起被排到水箱里。
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