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1.
double pin sucker rod
两头阳螺纹的抽油杆
2.
pin-to-pin reducer
两头阳螺纹的大小头
3.
pepe bend with male and female thread
一头带阳螺纹一头带阴螺纹的弯头
4.
pipe bend with female thread
两头带阴螺纹的弯头
5.
male and female cross
阳螺纹-阴螺纹十字接头
6.
Threads on rotary shouldered connections for petroleum industry
GB/T9253.1-1999石油钻杆接头螺纹
7.
Petroleum equipment--Thread gages for rotary shouldered connections
GB/T4749-1993石油钻杆接头螺纹量规
8.
mule-head hanger
驴头上挂抽油杆的装置
9.
A pipe coupling threaded on both ends.
螺纹接头一种两端都带外螺纹的管子
10.
a fastener with a tapered threaded shank and a slotted head.
由带螺纹的连杆和槽头组成的扣件。
11.
Finite element analysis of the screw structure of the drill-stem junction
钻杆接头螺纹结构形式的有限元分析
12.
Study on Rules of Fluid Flow in the Well Bore of the Screw Pump with the Ground-driven
地面驱动螺杆泵抽油杆旋转效应的研究
13.
A study of the surface crack at thread root of tool joint pins by the aid of finite element method.
石油钻杆公接头螺纹牙根部表面裂纹有限元计算
14.
box up and pin down
上部阴螺纹-下部阳螺纹接头
15.
Research on Surface Cracks and Reliability of Residual Life in Sucker Rods;
抽油杆表面裂纹及剩余寿命的可靠性研究
16.
female-male reducer
两端分别带有内外螺纹的大小头
17.
A Dynamics Study on Surface-driving Progressing Cavity Pump of Oil Production System;
地面驱动螺杆泵井抽油杆柱力学研究
18.
Development and Application of PCP Special Pumping Rod with Middle Displacement;
中排量螺杆泵专用抽油杆研制与应用