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