????????? ???????????
?????????????,??????,?????????????????????????,????????
??????????2?????????,??,????????????????????????????????,2???????????
?????????????,??????????????????,??????????????,??????????,???????????,???
???????????,??????14~15???????,?????????????,??????????????????????,18~20??????,??????????????,?????
?????????????,??????????????????????????,???????
????????,????????????
????,???????,??????????15~16???
??????????,?????????????????15???????,???15°C,???????5~8?,???????
??????,??17??????????????16?,???,?????????7~8???????????????????????????????
???????????,15???????,??,??????????????????????????16????,????,???????15??,???????????????????20????
???????,??4????????10°C?????????????,16??17°C;????15????26???????,??????10????????,?????
????????????15????,??,???????
???????????????????,????:??????????????????
??????????????,????????????,??????????????,??;??,???,???????
??,????,???????????????????,?????,????????,???????,???????????,?????????????
?????????:?????