Pump - Wikipedia, the free encyclopedia A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, ...
Chapter 3 產生真空的辦法 靜子中轉動而抽. 氣. 10. 渦卷式乾式幫浦抽氣原理. 11. 第三節高真空到超高真空抽 氣用的幫浦. 真空系統的真空度達高真空範圍後氣體的分子密度相對減. 真空 ...
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pump幫浦 - 購物搜尋結果
Heat pump - Wikipedia, the free encyclopedia A heat pump is a device that provides heat energy from a source of heat to a destination called a "heat sink". Heat pumps are designed to move thermal energy opposite to the direction of spontaneous heat flow by absorbing heat from a cold space and releas
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