求一篇关于抽油机的英文文献和译文 1，overview of extracting oil pumping unit is a kind of machine equipment，commonly known as\"KeTouJi\"，through the way of oil pressure out well.Unit 2，working 。
抽油杆接箍海关编码 根据机械零件来归类 参考税号84314310.00 石油或天然气钻探机用零件
英语翻译关于抽油机井管杆偏磨的，相关内容也可
英语材料翻译，工科、石油类 Conventional beam pumping unit is operating in the oil fields are the most common rod，the most extensive application of a ground power equipment.The power machine of high-speed rotation，low-speed through the gear box into the crank rotation，achieved through the four-bar linkage suspension up and down reciprocating motion of the rope，hanging rope through the drive rod，pump to achieve the lifting of crude oil.The product has reasonable structure，smooth，low noise，easy maintenance，etc.；hold the brake with external structure，with a safety device，flexible operation，the brake quickly，safe and reliable.希望能够帮到你
