ȸ
㹫ʽV=(A1+A2+ SQR(A1*A2) )*(h2-h1)/3
ļDGXMJɡ


ųƷ  Ʒ
̳http://bbs.3s001.com/
̳йĵѧϰĽŻվ
йרҵʡҵء桢ˮˮ硢ϢϵͳңϵͳȫλϵͳۺվվԴḻظҵ鼮оۣӵдҵMAPGISARCGISMAPINFOAUTOCADCASSGISRSGPSѧϰϡѵμƵ̳̣ڹؿɫú̿ʯ͡ұ𡢻ϢϵͳңϵͳȫλϵͳԺУ飨죩ƵϵͳĿмԱĿǰվѽ롰ҵΪУ棬ɫٷչԷչģԹģϲΡԷչ