3Research on Digital Image Processing of Coal Flotation Froth(Ⅰ)—— The liner neighbor algorithm for extracting features of digital coal flotation froth image120-123
7Experimental Research on Influence of Grain Size Gradation on Anti-Liquefaction Characteristics of Clayey Sand with Montmorillonite 138-141
10Research on External Environment of Sustainable Development Pattern Selection in Chinese Mining Areas151-157
16Discussion on Geological Controlling Factors of Coalbed Methane Content in Jiaozuo Mining Area179-181
19Analysis of Two Methods Detecting Methane with Constant Voltage on Sensor or Compensating Element190-193