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戴森Dyson真空吸尘器的吸力单位AW(AirWatts)换算成Kpa如何计算? - 知乎 公式是airwatts(AW)=真空吸力[[inches of water]×空气流量[cfm]/8 5, 真空吸力[inches of water]和真空度kpa都是是真空度,只是计量单位不同,就像买牛肉一个以磅计量,一个以kg计量,真空度[inches of wate和真空度kpa本身是可以转换的,