????????????????????????Ρ????????2.2??′?汾????????????????????????????????????????μ?????????????????????????????°汾?У???????μ??飬??????????????????μ?????????????????顣
???????
???????
?????????80W
??????200
??????100
??????200
????????????
????????????????????????????20%???У?20%??????20%??????????????50??
??????
???????
?????????80W
??????220
??????100
??????120
????????????
??????????????????????30%???????????????????????????10%????????????3???
???
???????
?????????120W
??????150
??????260
??????200
??????????
??????????????????幥????????30%??????????20%??????????1????????30%????
?????????(????????????????????)???????????????