2????5???,?,?????,??????????????????????“X”????????,?“??X”???????????,“??????????????X”????,??????????????????????,???????????
??“??X”???????????????????????????????????2??????5??????16?23?,?????1?????????2??,??
(? ???????)
??:????
??????0.7%???0.8%
????3???????
????????????????????
?????????????????????
???????????10????????
????????????????????
??????:??????????
?????????????????????
?????????????:????????
??????????????2000?????
??????????????????
?????????????????????
???????????????????????
??????0.7%???0.8%
??????:B?????????????
????????????????????
??????????????????????
?????????????????????
?????????????????????
????????10?50????????
??????????????360°????
?????????????????????
??:????????????11?45?
ISM??????????????
??????????????????????