???????????2????????????12?????????????????? (?????????????????? ????)?,13???????????6??????????????????????????????????,???????????????????????????????????,??????

??????????????????????????,?,??????75.03??????????????????????,?????

???????“?????????”???????????????,?????????????????????????62.90????????????,??????,?????????????????????,??,??????,??????????

???????,????,???????????????????????103.81????,????????,????????????????????????????????

??????,???????????“????????????”??????????,????????????????????1:6???????

??,??????????“??????”????????????“?????????????????”??????,??12????2:1???????????????,???“??”?

13????????????????????????,??????????????????????????????????,????,?????

?????,???????????13?????????????,31????????????U??????????????

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

??????U??????????????????,????,??

?????????????,???????????????????4×6????????????????????????????????4×7.5?????????,??????????,????????????1??2???

?????????????7.5???????“????????????”????????????????????,???????????????????????,????????,??????????(???????????) ??????????:???? “??????????”????

?? (??????????)?????????:?????? ????

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

2????????

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

4???????????

5?????qq

???????????2????????????12?????????????????? (?????????????????? ????)?,13???????????6??????????????????????????????????,???????????????????????????????????,??????

??????????????????????????,?,??????75.03??????????????????????,?????

???????“?????????”???????????????,?????????????????????????62.90????????????,??????,?????????????????????,??,??????,??????????

???????,????,???????????????????????103.81????,????????,????????????????????????????????

??????,???????????“????????????”??????????,????????????????????1:6???????

??,??????????“??????”????????????“?????????????????”??????,??12????2:1???????????????,???“??”?

13????????????????????????,??????????????????????????????????,????,?????

?????,???????????13?????????????,31????????????U??????????????

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

??????U??????????????????,????,??

?????????????,???????????????????4×6????????????????????????????????4×7.5?????????,??????????,????????????1??2???

?????????????7.5???????“????????????”????????????????????,???????????????????????,????????,??????????(???????????) ??????????:????