?? ????????????????!????X???????
????:1????????????:??????????
2???????
3???????
4?????95???
5????????
“??????,??????????”,???,???????????????????????????????17??,??????????“?????”(???EP)???????X???,????X??????,??????????X?????????????,??????EP??????????????????????????????“???”X????????(FXT)???,???????????X????
EP????????????(??)??????,??,????????????????????????????“???”?????????????EP????,?????
“???”???????????????????????????????,??X?????X????,??X???,?????????????????X????,????????????????????,???X???,??????????????????????,??X?????,?????
??,?357400????????????,????,??14%,??,??“????????????????”,???????????????,????????????????????,???????,???X????,???????????,????????????????X?????????
??,?????,?????????????ROSAT?????????????????Chandra,?????“?????????????????”?????X??????,?????????X??,????????????????????????????????????????????????????X???????????,“???”????,???“??????”?????????????,“????”???X?????????????,??????????????????????
????????????????????,????EP??????????,??????????????????X????EP????????????“?????????????????????”?????X???,?????
(???????????? ??? ????? ??) ?????????????:????