?? “???”???“???????” ??????“15??”
????:1???????:????vx?
2???????????????
3????????????
4?????11???
5???????
???????12?20? (????????? ?????)???????20????,??,??????????29???,?1.81????;987???,????????1.8??
??????,????????,????“????????????????????”??????,????,??(???????????????????)?????????????????,????“??????????????”????
12???????????????20?,?,????? ?????????????????????????“15?”????????????????,??3????,??“1+1+N”????,?“1”??????????????+“1”???+“N”???????,????“????”,??“????+???”????,????????
?????????????????????,??????“????”??????????“???”???????????????,??????????????????????????????????????,?????????????,?????????????“?????????,?;????,??;??????,???;????????????,???????????????”,??????????????????????????????????
??,“???????”?????,??(???)?????????,?,?????????11??????3???????????????,???212????????,????715??????????????,????1002?????????????????????,??????99???,????288??,???1797??(??????????)
????:????????????