????2????????????
????????1?26????????????????????????????????? (????? ????????????)1??????????????26???????,????????????2???????????,????????????????????2?????????????????????????????????
???,2?????????,???????????????????0.1~0.5?,?:????????21.0~23.4?,?????19.0~21.9?,????
????,????????(1??28?~2????????4?????),?,????,?????2??3?~4????,???????????????????????????????????????????1?????????30?????~2????1?,?1?????????????????31?~2?????????1?????,????????????????????????????2??1???
?,?????,???????????,?????????????????,????,????,?????????????????????,?????????????????????????????,?????????????????????,??(???????) ?????:??