活动框架
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。
微语录 · 个性签名
微语录 · 爱情句子
微语录 · 句子大全
微语录 · 经典语录
微语录 · 短文摘抄