Through analyses the force on the pumping rod, building-up the polish rod mathematical model.

经对抽油杆柱的井下受力分析，建立了光杆功率数学模型；

youdao

Through analyses the force on the pumping rod, building-up the polish rod mathematical model.

经对抽油杆柱的井下受力分析，建立了光杆功率数学模型；

youdao