1.
Design and Optimization on Holding Arm of Drilling Pipe Conveying Unit
石油钻杆运移机构起升臂设计及优化
2.
Design and optimization of the holding arm of the drilling pipe conveying unit
石油钻杆运移装置起升臂设计及优化
3.
air lift rod transfer elevator
气动抽油杆运移吊卡
4.
A rope or rod running vertically on the forward side of the mast on which the yard moves.
帆桅支索，纵竖索杆在桅杆前面垂直运动的绳或杆，帆桁在此上移动
5.
great lengths of drill pipe which are rotated by an engine at the top,
钻杆顶部安装的发动机带动钻杆旋转，
6.
EXPERIMENTAL STUDY ON SWARF|CARRYING OF SECTION MILLING CASING IN SIDETRACKED HORIZONTAL WELL
侧钻水平井套管段铣铣屑运移实验研究
7.
Stability and Nonlinear Response of Drilling Shaft System in Deep Slot Hole Drilling
槽孔加工中钻杆系统的非线性运动与动力稳定性
8.
It cannot allow the link to translate on the horizontal direction, thus enabling the link to do reciprocating motion.
不能让杆子的中心点左右移动，才能做往复运动。
9.
hard banding of tool joint
钻杆接头表面加硬圈
10.
Ingersoll-Rand jumbo column
英格索尔－兰德钻车托杆
11.
stacking capacity of derrick
井架的钻杆立根容量
12.
plain clinometer
钻杆下部装的测斜仪
13.
hard facing of tool joint
钻杆接头表面加硬层
14.
engine ,drill, dental, with swivel arm
牙科钻机,带旋转杆
15.
shoulder dressing tool
钻杆接头端面整形工具
16.
Defects Analysis on 37CrMnMo4 Drill Pipe Joints
37CrMnMo4钻杆接头缺陷分析
17.
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£
18.
Simulation Research on Drill Pipe of 2000 Meter Water Well Rig;
2000m水井钻机的钻杆仿真研究