1.
Gas Drainage Technology of Goaf with Boreholes from Surface Ground of Tangshan Mine
唐山矿地面钻孔抽放采空区瓦斯技术
2.
Study on Technology of Surface Drillings Draining Pressure Relief Gas of Coal Seam by Protected;
地面钻孔抽采被保护层卸压瓦斯技术研究
3.
Influencing factors to extraction efficiency of surface goaf hole
地面钻孔抽采采空区瓦斯效率影响因素
4.
Study on the Law of Movement and Distribution of Gas in Semi-enclosed Goaf on the Condition of Surface Hole Drainage;
地面钻孔抽采条件下半封闭采空区瓦斯运移及分布规律研究
5.
Study on the Law of Movement and Distribution of Gas in Goaf on the Condition of Surface Hole Drainage
地面钻孔抽采条件下采空区瓦斯运移及分布规律研究
6.
Research on Controlling of Coal Mine Reserves and Border of Recoverable Coal Boundary By Ground Drilling Hole
利用地面钻孔对矿井储量及煤层可采边界的控制研究
7.
Drill three holes in the floor/base plate for anchoring the leg.
在地面/底板上为锚固支柱打钻三个孔。
8.
Delaunay Triangulation of Geological Body Surfaces Based on Borehole Data
基于钻孔数据的地质面Delaunay三角剖分
9.
A hole with the top part enlarged so that the head of a screw or bolt will lie flush with or below the surface.
埋头孔顶部扩大的孔，为使钻或螺栓的头与地面相平或在地面以下
10.
When it has been decided where we are going to drill, we put up at the surface an oil derrick.
决定了钻孔位置后，我们就在地面上竖起井架。
11.
Accident Treatment of Boring in Air Shaft Ground Pre-grouting in Yangcun Coal Nine
杨村煤矿风井地面预注浆工程钻孔内事故处理
12.
spotfacing and centering machine
平端面钻中心孔机床
13.
When it has been decided where we are going to drill,
当确定钻孔地点后，
14.
Just over a hundred years ago men began drilling holes near the places where oil was seen seeping out of the ground .
恰恰在一百年前，人们开始在看来有石油渗出地面的地方附近钻孔。
15.
On application of DTH drill in drilling pile construction in karst developing areas
潜孔钻在岩溶发育地区钻孔桩施工中的应用
16.
Analysis of Dependence Relation of GPR and Core-drilling Used in Pavement Thickness Detection
探地雷达与钻孔取芯在路面厚度检测中的相关分析
17.
Modeling research on horizon interface with arbitrary boundary by B-Rep based on bore-hole data
基于钻孔数据任意边域地层分界面B-Rep建模研究
18.
Research on Three-Dimensional Geological Modeling Method Based on Drilling Data and Constraints of Intersected Folded Cross-Sections
基于钻孔数据和交叉折剖面约束的三维地层建模方法研究