??12??4? (????????? ??)?????????????,??????????????????????12?4??????????????????????12????46?,???,?????,?????????????,???????“???????”????

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

12???????????????????4?,??,?????????????????? ??????????

?????????????????“?”????,???????????????????????????,????????????,??300???450???,?????????1.4???????1.8???????????????????,??????????????????

?28???????????????(??)

??????????:???????????????? ??“?????”

?? ???????? ???????“????”???

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

2?????

3???????

4??????

5???????

??12??4? (????????? ??)?????????????,??????????????????????12?4??????????????????????12????46?,???,?????,?????????????,???????“???????”????

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

12???????????????????4?,??,?????????????????? ??????????

?????????????????“?”????,???????????????????????????,????????????,??300???450???,?????????1.4???????1.8???????????????????,??????????????????

?28???????????????(??)

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