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

2????????

3?????????

4??????????

5?????

????????2??????????12? (???????????? ????????????????)????????????2?????????11??17?30?,???????????(??:?????????)???????????????,???????????????(?????????????????:??)???YF-75DA??,??????????????“???????????????”?

????,??????,??????????????????????????????????????4??????????????????????YF-100?,2???????YF-75DA??????????????

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

?????????????,??????24??????????????????????????,??,??????????????????,???,??????????????????,?,????????????,??????????????,?????,??,????

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