發送短信 : Grouting in rock cavern by data mining 2

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   /   ||  / //\ \\ | |  \ || | || | ||    | ||   
  | [] || |  ___  ||| |__/ || | \\_/ ||   _| ||   
   \__ || |_||  |_|||_____//   \____//   /__//    
    -|_|| `-`   `-`  -----`     `---`    `--`     
     `-`