In this article, we'll look inside a vacuum cleaner to find out how it puts suction to work when cleaning up the dust and debris in your house. As we'll see, the standard vacuum cleaner design is exceedingly simple, but it relies on a host of physical principles to clean effectively....
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transparent cylinder in which they could see the dust, Dyson insisted on this feature. Seeing the dust spinning around, users appreciate how the cyclone works and can tell at a glance when the cylinder needs to be emptied. 竟管市场研究忠告买家由他们可能看尘土的一个透明圆筒会推迟, Dyson坚持...