1.
The generously designed drill rod clamping device can be opened up fully to enable the installation of drilling tools and drill casings exceeding 171/2" (444 mm) in diameter.
如图所示的钻杆夹持装置可安装最大直径为444毫米的钻具和套管.
2.
The extensive range of optional equipment includes hydraulically operated drill rod clamps, rotary casing drives and casing oscillators.
更大的直径可选装钻杆夹持器,套管驱动器和摇管器.
3.
Work-holding devices are called jigs and fixtures.
工件夹持装置叫做钻模或夹具。
4.
Research and Application of Supporting System for Drill Chucks Design Based on Knowledge;
基于知识的钻夹头设计支持系统研究及应用
5.
Its main functions are maintaining borehole gage,improving drill string stability and protecting lower drill string from excessive wear.
其重要作用是保持钻头尺寸符合标准，提高钻杆稳定性，避免钻杆下部过于磨损。
6.
part of a drill that grips the bit
夹头（钻或钻床上用以夹住钻头的部分）.
7.
A Kind of Pneumatic Manipulator based on Toggle in Series with Lever Force-amplifier
基于铰杆-杠杆串联增力机构的内夹持气动机械手
8.
STIFFNESS ANALYSIS OF THE MATCHING OF LENGTHENED SHRINK-FIT HOLDER AND CUTTING TOOL IN HIGH SPEED MILLING
高速加工热缩加长刀杆与刀具配合径向夹持刚度分析
9.
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，
10.
Key type drill chuck
GB/T6087-1993扳手钻夹头
11.
quick change drilling chuck in process
不停车快换钻攻夹具
12.
drill and turning tool holder
钻孔与车削两用刀夹
13.
drill chuck with thread adapter
螺纹联接扳手钻夹头
14.
hard banding of tool joint
钻杆接头表面加硬圈
15.
Ingersoll-Rand jumbo column
英格索尔－兰德钻车托杆
16.
stacking capacity of derrick
井架的钻杆立根容量
17.
plain clinometer
钻杆下部装的测斜仪
18.
hard facing of tool joint
钻杆接头表面加硬层