?2?????5????????????????? (???????? ?????????????????????????)??5??,????????,?????,????????1600?????“??”?????????,??????????????????3??????????3.5kg????????????????????(?????????????????????)?????????????

??????????,???????????(???)

???,???20??????????????,?,???????????????8????????,????????,?????????????????,??,???

?????????????????????????????“??,?????????”????????????????????????????,???????????????????120?????????????????,????????????????????,??,?????????????

?????(????)

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

“?‘????????????????????????’????,????????,?????”???,???????????????(?????????????????)

???????????:????????????? ??“????????????”????

?? ???? ??????1600?????“??????”

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

2??????????

3???????

4?????vx

5????????????

?2?????5????????????????? (???????? ?????????????????????????)??5??,????????,?????,????????1600?????“??”?????????,??????????????????3??????????3.5kg????????????????????(?????????????????????)?????????????

??????????,???????????(???)

???,???20??????????????,?,???????????????8????????,????????,?????????????????,??,???

?????????????????????????????“??,?????????”????????????????????????????,???????????????????120?????????????????,????????????????????,??,?????????????

?????(????)

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

“?‘????????????????????????’????,????????,?????”???,???????????????(?????????????????)

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