1The Design of Computer Integrated Monitoring System for Large Coal-preparation PlantWANG Zhi-jie1-42Mathematical Model for Computer Aided Lectotype Design of Mine VentilatorXI Tao, YANG Zhao-jian4-73SERVO Dynamics Analysis of A4VG Series Variable-displacement PumpsLI Ze-song, KOU Zi-ming8-9,124Optimum Design of Hydraulic Coupler Drive ShaftHAN Dong-jin10-125The Development of Intelligent High-voltage Inverse DC Power Supply for Electric DedusterZHOU Hao-bing, ZHONG Gui-xiang, WANG Yi13-156The Design of Wireless Remote Control for CraneLIU Jian-hua, ZHANG Fu-sheng, ZHANG Yu-jun, LIU Jing-na16-177Study on Fault Diagnostic Technology of Mine Hoist ReducerZHAO Ting-zhao18-208Optimal Design of Cylindrical Spring Using MATLAB SoftwareMA Tian-bing, DU Fei20-219The Study of Mechano-electronic Soft Starting DeviceXU Rui-yin22-2410The Design of Pressing Die for High-tension Rubber TubeZHU Qi-wu, LIU Dong-hong, ZHANG Qiu-ling24-2511The Prospects for Using New Wireless Communication System underground Coal MineZHAO Qing-mei, CHEN Xiang-yuan26-2812The Application of Speed Regulation Scheme Combining Variable Frequency with Variable Voltage to Coalmine HoistCHEN Li-xiang29-3113Gray Model Forecasting and Fuzzy Control of Coal- feed in A JigQIAN Li-quan, DU Chang-long32-3414Intelligent Diagnosing and Data Warehouse Technology for Coal EnterprisesXU Chang-kai, LI Ji-jun35-36,3915Selecting Principle Analysis of Damping Resistance for Multitap Arc-suppression CoilCUI Lu-mei, LI Hong-xia, DU Yong-zhong37-3916Concentricity Analysis of Hole Throats on Both Ends of Carrier RollerLI Jin, ZHANG Zhi-fang, ZHAO Yu-ru, WU Liang-chen40-42,4517The Profile Determination of Involute Finger-type Milling CutterTAO Yong-qin, MA Ji-lun43-4518Measures of Improving Mattill Self-advancing Tail DeviceLI Tian-guo46-47,5019Polynomial Approximation Method of Canopy Track for Powered SupportsXU Ya-jun, WANG Guo-fa, LIU Cheng-feng48-5020Characteristic and Operating Maintenance of Accumulators for Engineering MachineWANG Gong-sheng51-54 