4、*******************'基本变量定义DimaAsDouble'椭球体长半轴DimbAsDouble'椭球体短半周DimfAsDouble'扁率DimeAsDouble'第一偏心率DimeqAsDouble'第二偏心率DimdhAsInteger'带号DimFEAsDouble'东偏移DimFNAsDouble'北偏移DimL0AsDouble'中央经度Dimk0AsDouble'比例因子ConstPIAsDouble=3.14159265358979PublicEnumCanshu Beijing54=0 Xian80=1 WG