1.
Probe on the Failure Analysis and the Design Optimization of Drill Pipe Structure
失效分析对钻杆结构设计优化的促进
2.
Analysis of Screw Thread Structure of Drilling Stem with ANSYS
基于ANSYS的钻杆螺纹结构形式分析
3.
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
4.
According to the drillpipe structural characteristics, a dolly appropriate for drillpipe and Kelly detection is designed, of which its probe is adjustable.
根据钻杆的结构特点,设计了探头距离可调的适用于圆钻杆和方钻杆的探测小车。
5.
Self-Rescue Device Development of Rodless Drilling Unit and Structural Analysis of Guiding & Supporting Device
无钻杆钻具自救装置研制及导向撑压器结构分析
6.
Penetration of the stems and feeding of larvae are impaired by the structural characteristics of the plant.
植物借助结构特点来阻碍幼虫钻入茎杆和取食。
7.
The Structure Analysis and Welding Technology Research for the Mast of NR220 Rotary Drilling Rig;
NR220旋挖钻机桅杆结构分析及焊接工艺性研究
8.
Structural Analysis and Optimum Design of Downhole Motor Based on CAE;
基于CAE的螺杆钻具结构分析及优化设计
9.
Structural analysis and improved design for transmission shaft of screw-drilling device
螺杆钻具传动轴的结构分析与改进设计
10.
The Study on Stabilization of Mast Framework System of 2km. Full Hydraulic Drived Deep Geological Drilling Machine
2000米深孔全液压岩心钻机桅杆结构系统稳定性研究
11.
The high seam drill2000 is stainless steel construction and the cylinder rods of the1 st inner legs of the stinger and drill leg are stainless steel.
此厚煤层钻2000为不锈钢结构，且刺和钻支架的一级内支架所属的活塞杆也是不锈钢的。
12.
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
13.
Mechanics Analysis of Crank-Connecting Rod in Drilling Pump
钻井泵曲柄连杆机构的受力分析研究
14.
Analysis of force state for adjustment drill frame of roof bolter
锚杆钻机立面变角机构受力状态分析
15.
Structural dynamic analysis on ultrasonic driller and drilling experiments
超声钻结构动力分析与钻削实验研究
16.
Application of Limit Satet Method in Design and Calculation of Mast structure System of Deep-hole Full Hydraulic Core Drilling
极限状态法在深孔全液压岩心钻机桅杆结构系统设计计算中的应用
17.
Consisting of small rods or rodlike structures.
杆的由小杆或杆状结构组成的
18.
Application of screw refrigerator into freezing drilling industry for coal mine
螺杆制冷机在煤矿冻结钻井行业中的应用