?? ?????6.9?????????????
????:1??????:???????
2???????
3?????
4????????
5??????????
????1?????????????7? ?,??:1?????7??9???05?(?????????????28.54??,??????????87.43??)??6.9???????????,??
?:?? ??:???????????????1?????????????7? ?,??:1?????7??9???05?(?????????????28.54??,??????????87.43??)??6.9???????????,??
?:?? ??:???????????????:1??????:???????
2???????
3?????
4????????
5??????????
????1?????????????7? ?,??:1?????7??9???05?(?????????????28.54??,??????????87.43??)??6.9???????????,??
?:?? ??:???????????