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181. Research On The Rational Arrangement Method Of Mining Gateway And Technology Of Controlling Floor Heave By Grooving In Close Distance Coal Seams
182. Research On The Structure And Support Load Analysis Of Full-mechanized Mining Face In Close Distance Coal Seam Under Goaf
183. Study On The Mining Roadway Arrangement And Surrounding Rock Control Technology Of Ultra-close Multiple-seams Mining
184. Study And Application Of Comprehensive Treament Technology Of Spontaneous Conbustion At Upper Goaf Close Distance Coal Seams
185. Study On Stability Prediction Of Mined-out-area In Shallow Close Distance Seams
186. The Study On The Law Of Strata Behaviors And Strata Movement In Close Coal-seams Mining Under Goaf
187. Study On Reasonable Staggered Distance And Strata Behavior Regularity Of Simultaneous Mining In Close Distance Coal Seams In Guo’er Zhuang Colliery
188. Study Of Mining Gateroad Layout On The Extremely Close Coal Seam Group In Chenghe Mining Area
189. Test And Simulaiton Study Of Optimum Circulating Load In Close Grinding Circuits Of Fankou Plant
190. Control Technical Research On The Stability Of Wall Rock Under The Deep Close Continuous Roadway Passed By Working Face
191. Study On Caving Method Ascending Mining Of Closed Distance Thin And Thick Seams
192. Design And Realization Of The Gear Digitized Closed Loop Processing System
193. Study On The Coal And Gas Outburst Mechanism And Warning Of Close Coal Seams
194. Mechanism And Prevention Of Support Crushing Disaster While Mining Out Of The Upper Coal Pillar In Close Distance Shallow Seams
195. Research On The Roof Disaster And Its Control Technique During Full Zone Mining In Ultra Close Coal Seams By Similar Simulation
196. Instrument System Engineering In Polycarbonate Project
197. Based On The Coercivity Of Ferromagnetic Material Stress Detecting Technology
198. Research On Horizongtal Well Drilling Design Optimization Of Close Sand Reservoir In Fanjia Block
199. Design And Development Of The Control System For A Rotary Steerable Drilling Model
200. Supporting Technology Research Of Roadway In Ultra-close Multiple-seams Mining
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