???????????,??,????????????????????,?????28?10??,???????????57.92???,?0.83??????,??II?????????????,?????24??,????????????,?????????????

(??? ?????? ??? ????????????? ??????????????? ????????)

????:???????????????

??“??????????”????

?? ??????:????? ????

????:1???????????:????????

2????????????

3?????????

4??????

5???????vx

???????????,??,????????????????????,?????28?10??,???????????57.92???,?0.83??????,??II?????????????,?????24??,????????????,?????????????

(??? ?????? ??? ????????????? ??????????????? ????????)

????:???????????????