3号煤层采掘工程平面图 1775511123458 http://39.106.203.141:8090/iserver/output/temp/3%E5%8F%B7%E7%85%A4%E5%B1%82%E9%87%87%E6%8E%98%E5%B7%A5%E7%A8%8B%E5%B9%B3%E9%9D%A2%E5%9B%BE_100x100/13677/1x0/446x310_295420816.png?_t=1775511123458 0 0 256 256 69531.21100853979 31941.465980200213 70457.58232390274 32867.837295563164