利用流体力学的能量方程，分析了分级机内的速度和压力分布。
Based on the energy equation of hydrodynamics, the distribution of velocity and pressure in the classifier was analyzed.
根据流体力学、热力学、气体动力学方程和能量不变方程，求得了自吸时间和抽气速率公式。
Equations based on hydrodynamics, thermodynamics, gasdynamics and the law of energy conservation are used to find the time required for self-priming and rate of air pumping.
基于流体力学守恒方程，建立了受限空间内部的能量产生、转移和损失模型，并给出了各种能量的计算方法。
Based on the Conservation equations of fluid mechanics, established the model of the internal energy generation, transfer, loss for the limited space and gave each energy computational method.
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