2015年9月23日星期三

Type air pump Classification

The air pump is an enclosed space, or add a device to exclude air from the closed air space. air pumps is mainly divided into electric pump, hand air pump and pump feet moving. Electric air pump is powered pump electricity, compressed air through the power constantly generates pressure; manual pump is to practicing hand-powered pump, by practicing hand kept compressed, resulting in pressure; feet move leg muscles pump is powered the pump, compressed air through the leg muscles constantly generating pressure to work.

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