underground boring是什么意思

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用法例句

Research of Key Technology with Drilling Stem Fixed with Cable in Directional Drilling under Coal Mine

煤矿井下定向钻进通缆钻杆关键技术研究

The measurement while drilling technology in nearly horizontal directional drilling in coal mines

煤矿井下近水平定向钻进中的随钻测量技术

Application of Directional Drilling Technology in Coal-bed Methane Vertical Well Construction

定向钻井技术在煤层气垂直井施工中的应用

Technical Progress of Direct Measurement Method for Coal-seam Gas Content in Our Coal Mines

我国煤矿井下煤层瓦斯含量直接测定法的技术进展

Construction Technology and Equipment for Gas Drainage Borehole Drilling in Underground Coal Mine

煤矿井下瓦斯抽采钻孔施工技术与装备

Reason Analysis and Countermeasures for Undergound Drilling in Coal Mine

煤矿井下施工钻孔偏斜原因分析和对策

The construction craft research of directional note thick liquid water shutoff drill hole in the depletion region

过煤矿采空区定向钻孔施工工艺研究

Research on Measurement-while-drilling Technology in Underground Mine and Data Processing Method of Borehole Trajectory

煤矿井下随钻测量技术及钻孔轨迹数据处理方法研究

Research and application of complete set of technology for directional fracturing to increase coal seam permeability and eliminate coal/gas outbursts in underground coal mines

煤矿井下定向压裂增透消突成套技术研究及应用

Location, tracking and enquiry management for coal mine.

煤矿井下人员的定位、踪、询管理。

Personal Position System Used in Coal Mine Based on RFID;

基于RFID的煤矿井下人员定位系统

Design on personnel tracking system of underground mine based on MapInfo

基于MapInfo的煤矿井下人员定位系统设计

Application of Directional Drilling in CBM Exploration

定向钻进技术在煤层气勘探中的应用

Application of Anti-well Drilling Rig to Main Shaft Coal Bunker Construction in Xinyi Coal Mine

反井钻机在新义煤矿主井煤仓施工中的应用

To bore(a shaft) with a trepan.

钻用钻井机钻（矿井）

Application of Oil Industry Special Purposed Floating Hoop and Shoe on Coalmine Service Borehole Casing Lowering and Consolidation

石油专用浮箍浮鞋在煤矿服务钻孔下管和固井中的应用

Determine Scheme of Down Carry Extensible Belt Conveyor in Coal Mines

煤矿井下下运可伸缩带式输送机方案的确定

Analysis on the Present Situation and Future Development Direction of Underground Auxiliary Transportation in Coal Mine

浅析煤矿井下辅助运输的现状及未来发展方向