Energy-saving and smooth operation while forced reversing can be realized by good play of the buffer springs so long as the relative sliding length between the counterbalance weight and the movable frame on the load-belt long stroke pumping unit is properly designed.
设计宽带长冲程抽油机时,合理地确定平衡重与活动框架的相对滑移长度可以更好地利用缓冲弹簧在换向时实现节能和缓冲的目的。
英语网 · 双语娱乐资讯
英语网 · 高中英语
英语网 · 初中英语语法