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  齒輪泵的優(yōu)缺點分析 
      齒輪泵優(yōu)點:自吸式;排出量恒定且振動很小;可以雙向輸送;由于較小的間隙,流量隨粘度和壓力變化不大。
 Advantages of gear pump: self-priming; Constant discharge and the vibration
 is small; Can be two-way transmission; Due to the small clearance, the flow
 changing with viscosity and pressure is not big.
        齒輪泵缺點:由于較小的置換容積以及會磨損齒牙,所以只能輸送干凈的流體;不能空轉(zhuǎn);由于裝配和定位精度高,所以加工誤差要求很小。
Disadvantages: the gear teeth due to smaller displacement volume and will wear,
    so can only transport clean fluid;Don't idle;Due to the assembly and high
    positioning accuracy, so the machining error requirement is very small.  
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