长冲程抽油机 meaning in Chinese

long stroke pumping unit

The design of chain type long stroke pumping unit
链式长冲程抽油机设计
A kind of long - strike oil pumping machine using planet - gear
一种行星齿轮长冲程抽油机的换向机构研究
The research on lower super - long stroke pumping unit with a cylinder - chain
圆柱链低矮式超长冲程抽油机的研究
Parameter analysis of long stroke pumping units of accurate counterbalance and dual - belt of b - 14 - type
14型全平衡双带长冲程抽油机参数分析
Optimum design of a long stroke variable torque pumping unit and simulation of its dynamic behaviors
扇形长冲程抽油机的优化设计与动力仿真