1.
Have you measured those spiral collars and flex joints?Not yet.
你量过那些螺旋钻铤和挠性短接吗？还没有。
2.
Design of Screw Thread for Drill Collar of High Torque Connections and Finite Element Analysis
高抗扭强度钻铤螺纹设计及有限元分析
3.
Failture Analysis of Drilling Collar Thread Connections and Structure Optimization
钻铤连接螺纹断裂失效分析及结构优化
4.
auger with valve
(钻浅井用) 带阀螺旋钻具
5.
The endurance crack is apt to be produced in collar thread during drilling, which eventually results in the connection failure.
在钻井过程中,钻铤螺纹容易产生疲劳裂纹,最终导致连接失效。
6.
Influences of dimensional deviations on contact characteristics of threaded joint with double steps in drill collars
钻铤双台阶螺纹接头尺寸偏差对接触特性的影响
7.
screw-feed diamond rig
螺旋给料式金刚石钻机
8.
hydraulic gait-model all-auger drilling machine
液压步履式螺旋钻孔机
9.
a plumber's snake for clearing a trap and drain.
清洁排水管的螺旋钻。
10.
auger backfiller
万能螺旋钻式回填机
11.
drill ,spiral, interchangeable, of base metal
可互换螺旋钻,贱金属制
12.
a bit or drill having deep helical grooves.
有深螺旋状凹槽的一种钻头或钻井。
13.
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。
14.
5.11 The drill collar O.D. is 7.5 inch, and the drill pipe O.D. is 5 inch.
钻铤外径为7.5” ，钻杆外径为5敗£
15.
A tool for boring holes in wood or ice.
螺旋钻，木螺钻一种用于在木头或冰上钻孔的工具
16.
Research on Direction Control Techology of Auger Drill Miner Drill
螺旋钻采煤机钻具定向控制技术的研究
17.
A Dual Tube Auger for Unsaturated Loess Drilling
一种用于非饱和黄土钻探的双管螺旋钻
18.
a snake used to unblock toilets.
用来清理厕所的一种螺旋钻。