High viscosity gear pump does not generate pressure, it is only the output flow. Pressure is low or no pressure, high viscosity gear wheel pump don't inhale the liquid or leakage is serious.
Low atmospheric pressure and temperature of surrounding air are both effected to locomotive output power at wheel rim and train resistance with diesel traction.
低气压和低气温均构成对机车轮周功率(内燃牵引时)和列车阻力的影响。
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In this paper, the CBN grinding wheel of high efficiency, accuracy and surface quality was studied by means of lowpressure abrasive water jet.