弹簧: spring; mechanical spring杆: shaft; rod; bar接头: connect; join; joint弹簧杆: spring bar; spring beam; spring lever; spring rails; spring rod; springbeam杆接头: knock-off joint弹簧杆衬套: spring rod bushing减速弹簧杆: retarding spring stem升降弹簧杆: lifting rod spring有槽弹簧杆: grooved spring bar中心弹簧杆: centring spring rod抽油杆接头: pumrod joint; rod connector; sucker rod substitute舵杆接头: rudder coupling方钻杆接头: kelly bar sub; kelly joint横拉杆接头: track rod end活塞杆接头: piston rod attachment假钻杆接头: mock tool joint节流杆接头: throttle lever connection联杆接头: link coupling牵引杆接头: hitch head手闸杆接头: hand brake lever adapter投杆接头: bar drosub引锭杆接头: dummy bar head钻杆接头: drill pipe joint; drill pipe sub drill adopter; drill pipe tool joint; drillrodsu; rod coupling; tool joint弹簧杆润滑器: snap-lever oiler标准钻杆接头: standard tool joint
