井口

• Technical improvement and locale application of the
  70型轻便压裂井口技术改进及现场应用
• Wellhead bias - adjustable device for rod - pumped well
  抽油机井井口调偏装置
• Discussion on some parameter of bf safety catcher in shaft
  型制动绳防坠器井口试验有关参数探讨
• ' m taeko guch . i i be 12 years old n june
  井口妙子到6月就12岁了
• Run the bop and land it on the well - head
  下防喷器坐到井口上。
• Technical code for protection device of well head in beach - shallow sea
  滩海油田井口保护装置技术规范
• The effection analysis of steam injection parameters at the well head
  井口注汽参数对注汽效果影响分析
• Study and application of packing feeder for pumping unit on oil well
  游梁式抽油机井口盘根旋进器的研制与应用
• Will that fit our wellhead
  那个对井口来说合适吗
• Abnormal well head pressure of high productivity gas wells in luojiazhai
  罗家寨高产能气井测试井口压力异常分析