..............page:60-63,84
..............page:53-55,59
Water-bearing medium permeability of the mutation mechanism
lei fengbin~1; li guoxia~2; han zhiyong~2(1.college of chemical engineering and environment; north university of china; taiyuan 030051; china; 2.college of petrochemical technology; lanzhou university of technology; lanzhou 730050; china)
..............page:31-34,39
..............page:13-16,94
Application of current large-scale topographic map in urban cadastral inventory
zhang xianwei~1; li guoqing~2; kan anke~(2; 3); zhang ruijun~4(1.shangdong zheng yuan geographic information engineering co.; ltd.yantai branch; yantai 264002; china; 2.key lab of earth exploration & information techniques of ministry of education; chengdu unviersity of technology; chengdu 610059; china; 3.college of land resources; china west normal university; nanchong 637002; china; 4.chengdu cadastral land-use planning center; chengdu 610059; china)
..............page:64-67
..............page:45-48,52