2???8????????????????,??,???????????????????????5000?, ?????????????????
???:????????????
?????????????????????
??????GM??:???????????
??????????????????????
???????????:??DQ??????
???????4???????????????
??????????????360°????
ISM??????????????
???????????????????
??????:??????????
???:???????????:????????
??2???????0.8%??????
??:????????????
?????????????????????
??????????????????
??????????????3??????
????????????16??????
???????????????:?????????
??????:??2??6??????????
?????????,??????????40??
??????6.6???????10??
??????????????????????
????????????????or??????
??:?????????25????1???
?????????????????
????3???????