1.
drill ,crown, toothed, whether or not abrasive coated working edge
有齿顶钻,无论表面是否涂有磨料
2.
drill ,crown, not toothed, with an abrasive coated working edge
无齿顶钻,带涂有磨料的工作刃
3.
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，
4.
a drilling bit with cutting edges usually hard-tipped against wear.
有靠着钻身的硬顶和切边的一种钻井钻头。
5.
a very hard small point made from a diamond.
用钻石做的非常坚硬的小尖顶。
6.
"Diamond", a top-grade air conditioner with an imperial manner.
富有帝皇气派的顶级空调器——“钻石”。
7.
Technology of 1000 meter directional borehole at large diameter for mine gas extraction
顶板大直径千米长钻孔抽采瓦斯技术
8.
The ship's carpenter made a hole in the top of my box.
船上的木匠在我的箱子顶上钻了一个洞。
9.
Application of Technology of High Gas Cannon Picking Roof Perforate Gas Administer
高瓦斯炮放面顶板钻孔法瓦斯治理技术应用
10.
Pressure releasing and gas drainage with long bore hole in roof overburden of fully mechanized caving face
综放面顶板覆岩走向长钻孔卸压抽放瓦斯研究
11.
Distribution Features of Borehole Temperatures in the Miaoergou Flat-topped Glacier,East Tianshan Mountains
东天山庙儿沟平顶冰川钻孔温度分布特征
12.
The deviational survey unit measures the parameters of the apex angle and the azimuthal angle of the bore hole;
测量单元用于测量钻孔的顶角与方位角等参数；
13.
Investigation of the Wholly Hydraulic Top-driven Petroleum Rig Model's Digital Mockup;
全液压顶驱石油钻机模型数字样机研究
14.
The Research and Implementation of Virtual Prototype in the Top Drive Drilling System;
顶驱钻机虚拟样机原型系统研究与实践
15.
Siemens Simatic S7-300 Applications in Top-Drive Drilling Equipment;
西门子SIMATIC S7-300在顶部钻井驱动装置中的应用
16.
Prevention Measures on Not Enough Concrete Strength of the Top Drilling and Pouring Stake;
钻孔灌注桩桩顶混凝土强度不足的预防措施
17.
Research and Development on the Transmission System of the Low Temperature Top Drive DQ-40LHTY-LA
DQ-40LHTY-LA低温顶部驱动钻井系统传动装置的研制
18.
The Research on the Multi-functional Full-hydraulic Top Drive Drilling System
多功能全液压智能化钻机顶驱系统研究