vacuum flow
... Unauthorized-Use Warning Devices 防盗报警装置 vacuum flow 真空流向 vacuum breaker link 阻风门切断器连杆 ...
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空气压缩机气液分离滤芯，流向由外向内，真空泵气液分离滤芯流向由内向外。
Coalescing filters used in air compressors flow the outside of the element in while coalescing filters used in vacuum pumps flow the inside of the element out.
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