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

????:????SN????:?????????

?1??17? ?,1?????????????????17??,?????????????

???????????????????????:?,???,?????????????????????

?:1?????????????????????7?,???????6.8???,?????????,??????????????????,????????,?????????

??????,???????????,??????????????????????????????????,????????15????,???2055????????????869????,????????????20????????????????????(??),???????????????????297?;????27???????,?????????2756????,????21?,????????????22359????????????,????????????2812???????(????????),??9.5?????????????,?4300???????????,?4700???

???,???;??????????,????????“???”??????????????????,??????????????????,?“?”? ??????????:?????