???1????????????????干?????θ??????????????????Ч?????????????′????????1???????????о??????????????28?32??????????????乤??Ч????????????????????????????32?????????????????????????????????????????????????????У???????29??????????????Ч????????????????????????????????
??????????????????????????????????????????????????Щ????????????????y????????????????????????????????????????????價(jià)?????????????????????????????Ч????????????????????????15????????????????????????????С???????????92%????????????????????????7.3???????????????????????50?0.75????С???????????????10000?????????????????????С?????300???????y????????10???????????8???￡????10С??????????????92%??????????????????????1.7%??
??10000?O10??????????????????????С????????500????????8С???????μ?????12?????á?????????????10???????????????????С?1.5Kw????μ?????2000?????????1.7%????????3???·?????????μ??35.4??????15??????????????????531??
