??????? ???????????15.3?

????:???95?????:????vx

?2???17?? (???????????????????? ??????????)???????????17???,?,2???????????13??16?????????????,?????,???72????15.3?,??????????????????;??????????????????????10???48???6.5?~10.9??????????????????,???????;??????????4????????

????????,???? ??

???????,?????????,?????????????????

?2??????????18????????????2?22?????????,???????,???????,?????????2?19??2?20??????,???????????,???????????????????,??????????????,????????????,?????????????????(???)

???:???