??????????????7??201????????嶨?????????

???????????????

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?????????????????????磬????????????????????????????????????????????????????????????λ????? m ????????? cm ????????? mm ??????????????У????????磨?壩???????????????????????λ??

????????

??????????????????????????????????????????????????????????????????????????飬????????????????????????紹???

?????????????

???????????????

10??2000??8000 21??
10??2000??8000 52??
10??2000??8000 42??
10??2000??8000 35??
12??1800??8000 42??
12??2000??8000 42??
12??2000??8000 32??
14??2000??8000 65??



???????????????7??q345qc????????嶨?????????