Due to structure needed, Anti-impactstroke is one of the important factors that have great influence on the pump efficiency of high-gas-contained oil well.
由于结构需要，抽油泵的防冲距是高含气井中影响泵效的重要因素之一。
2
The Multi-work Condition Declivitous Impact Testing System was introduced which has variable impacting angle, rigidity, and length of stroke.
论述了多工况倾斜冲击试验系统，该系统具有可变的冲击角度，刚度和行程长度。
3
Although depression isn't the most important risk factor for stroke, the researchers say it likely has a noticeable impact on the stroke rate.