1.
Gas drainage technique by 1000 m long and large diameter roof boreholes in high gas coal seam group
高瓦斯煤层群顶板大直径千米钻孔抽采技术
2.
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
3.
The practice and application of kilometer-orientated large diameter and long-distance drilling
千米定向大直径长距离钻孔的实践与应用
4.
Bit Design for Main Pier Bored Piles of Donghai Bridge
东海大桥主墩大直径钻孔灌注桩钻头设计
5.
Research on the Bearing Performance of the Super-Long and Large-Diameter Bored Pile;
超长大直径钻孔灌注桩承载性能研究
6.
EXPERIMENTAL RESEARCH ON NEGATIVE SKIN FRICTION OF LARGE-DIAMETER BORED PILES
大直径钻孔灌注桩负摩阻力试验研究
7.
Gas drainage in seam with large auto variable diameter bore holes
自动变径大直径钻孔抽放煤层瓦斯试验
8.
One micron is a thousandth of a millimeter: a pinhead is about a millimeter across.
一微米等于千分之一毫米。 针头直径大约一毫米。
9.
Construction Control in Bored Pile with Big Diameter of Anqing Yangtse River Bridge
安庆长江大桥大直径钻孔桩的施工控制
10.
Construction Technology of Large Diameter Rotary Drilled and Bored Piles in Qingdao Gulf Bridge
青岛海湾大桥大直径旋挖钻孔灌注桩施工技术
11.
Construction Quality Control of Large-diameter Cast-in-place Bored Pile of Huanghe Bridge
黄河大桥大直径钻孔灌注桩施工的质量控制
12.
Design and Construction of large Diameter Drilling Hollow Pile without Pile Caps
无承台大直径钻孔空心桩的设计与施工
13.
The Theoretic Research of Feasibility of Big Track Boring Used in Coal and Gas Burst Predication;
大直径钻孔预测与瓦斯突出可行性的理论研究
14.
Study on the Vertical Bearing Capacity of Large-Diameter Bored Cast-in-Situ Long Pile;
大直径深长钻孔灌注桩单桩竖向承载性能研究
15.
Nonlinear Analysis of Pile Group Effect of Large Diameter Cast-in-situ Piles;
大直径钻孔灌注桩群桩效应非线性分析
16.
Study of computational method for ultimate shaft resistance of large-diameter bored cast-in-situ pile
大直径钻孔灌注桩极限侧阻力计算方法研究
17.
Technique for Construction of Large Diameter Over-long Drilled Piles in Complex Geology in Deep Water
深水复杂地质大直径超长钻孔桩施工技术
18.
Construction Method of Coring for Pore Forming Based on Water Drilling of Super-diameter Rock Pile
超大直径岩石桩水钻取芯成孔的施工技术