短語詞組短語auger coal mining method 螺旋鉆采煤法auger drill mining 螺旋鉆探采礦highwall auger mining method 高邊坡鉆孔采礦法highwall auger mining 高邊坡鉆孔采礦法highwall mining with auger machine 螺旋鉆機(jī)開采 返回 auger mining