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Method for preventing and treating old empty water on thick coal seam under condition of repeated mining caused by small kiln damage to layering
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Coal pore structure change determination device and method based on nuclear magnetic resonance technology
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Close-fitting type mask
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Preparation method of dental enamel regeneration composition
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Delay line type based surface acoustic wave sensing circuit system design method
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Mine safety monitoring system design method based on surface acoustic wave sensor
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Tunnel and underground engineering simulation measurement system and method
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Centrifugal rotary spiral concentrating machine
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Screen image acquisition method based on two-dimensional code
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Mechanical element motion assembly precision reliability analysis method based on fuzzy theory
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Method for preventing water burst and sand burst in coal mining
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Commodity displacement identification method based on gravity sensor data
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Multi-source PWV data fusion method
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Method for influencing ground subsidence by Weibull time function based on measured data
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Positionable hydrogen measurement method based on single photon counting
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A kind of mining liquid carbon dioxide conveying device and its leakage monitoring method
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A kind of determination method of large-inclination-angle coal bed force piece load
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Mine unworked country constructs the relative entropy Forecasting Methodology of relative component degree
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A kind of arm-type pottery mud 3D printer of manipulator
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A kind of multifunctional serial port server and data transmission method
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