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

2?????

3??????????????

4?????SN

5???????

??2???8?? (??????? ??????????)????????????,???????????????????????“??????????????”????8????????????????????????????,???

??????“???????”??????“????????????????????”?????????,????????130????????,???“?????”??????????????,?,???????????????????????

“????,???????,????????”??????????,?????????????????,??????????????,??,??,??????????

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

“???”?“??”??????????“??????????????”?????,?????????????????????????????????,?????,???????,????????????????????

?????,????“????”???????????“??????”???????????,??????“???”??????????????????,??????????“??????????”????(????????????????) ???:?????