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.
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。
The spot test of the control system showed that up to 30% of the energy-saving rate was achieved under the guaranteed oil output and the intelligent control of the oil pumping was realized.
该控制系统在油田中的实验结果表明，在保证了采油量的前提下，节电率达30%以上，实现了抽油机采油的智能控制。
The spot test of the control system showed that up to 30% of the energy-saving rate was achieved under the guaranteed oil output and the intelligent control of the oil pumping was realized.
该控制系统在油田中的实验结果表明，在保证了采油量的前提下，节电率达30%以上，实现了抽油机采油的智能控制。
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