1.
a shaft with screw thread (the worm) meshes with a toothed wheel (the worm wheel); changes the direction of the axis of rotary motion.
螺纹杆与齿轮相啮合；改变轴旋转运动的方向。
2.
grout anchored deformed bar
灌浆锚定的螺纹钢杆
3.
double pin sucker rod
两头阳螺纹的抽油杆
4.
Secondly there is error between thethread roll angles of thread rolling die and drill rod.
滚丝轮螺纹和钻杆螺纹的螺旋角有误差。
5.
Screw thread shanks for thread forming screw--Metric coarse thread series
GB/T6559-1986自攻锁紧螺钉的螺杆粗牙普通螺纹系列
6.
Rope thread extension steel bars for rock drilling
GB/T6482-1994凿岩用波形螺纹连接钎杆
7.
Threads on rotary shouldered connections for petroleum industry
GB/T9253.1-1999石油钻杆接头螺纹
8.
carbide tool shank for petroleum pipe internal threading
石油管内螺纹硬质合金刀杆
9.
carbide tool shank for petroleum pipe external threading
石油管外螺纹硬质合金刀杆
10.
Petroleum equipment--Thread gages for rotary shouldered connections
GB/T4749-1993石油钻杆接头螺纹量规
11.
Drill pipe thread gauges
GB/T9253.9-1995石油钻杆螺纹量规
12.
API drill pipe thread
美国石油学会标准钻杆螺纹
13.
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。
14.
Non-rising-inside screw stems are used in bronze and iron gate valves.
暗杆－内螺纹结构用于青铜和铸铁闸阀。
15.
Liquid or slurry never touches stem threads.
液体或泥浆绝对不会接触阀杆螺纹。
16.
Longitudinal-cracking Failure Analysis of Box
φ139.7mm钻杆内螺纹接头纵向开裂失效分析
17.
Cause Analyses of Pin Joint Fracture of 139.7 mm Heavy Weight Drill Pipe
139.7mm加重钻杆外螺纹接头断裂原因分析
18.
Analysis of Screw Thread Structure of Drilling Stem with ANSYS
基于ANSYS的钻杆螺纹结构形式分析