Accurate calculating of the effective horsepower of pumping unit is the key to calculating the pumping unit system efficiency.
正确计算抽油机井的有效功率是计算抽油机井系统效率的关键。
Accurate calculating of the effective horsepower of pumping unit is the key to calculating the pumping unit system efficiency.
正确计算抽油机井的有效功率是计算抽油机井系统效率的关键。
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