Under this situation, we must reduce the speed of pump, increase the power of the motor, increase the import and export of pipe diameter to reduce the flow resistance of the medium.

在这种状况下，必须降低泵的转速，加大电机的功率，加大进出口的管径来减少介质的流动阻力。

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The variation of medium pore diameter and porosity factor is in accordance with that of the pore volume, showing a high permeability of low rank coal reservoirs.

中值孔径、孔隙率的变化特征与孔容一致，预示了低煤级煤储层较高的基岩渗透率。

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The article also introduces the micro - fine medium small diameter heavy medium cyclone and fine slime separation floe separation group technology.

还对目前已获得良好的实验室试验结果的微细介质小直径重介质旋流器与细泥选择絮凝分选组合工艺做了介绍。

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The industry's assumption has long been that shrinkage of hair-strand diameter which is just 0.075 millimeters for a person with fine-to-medium hair was too small to detect.

WSJ: Old Hair Days: Products to Help Manage Gray and Thinning Hair