????:?????
“??????????????”_????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??
????:????-30°C ??????????
????:????-30°C ??????????
??
????:
1???????????????:?????????
2?????????
3????????
4?????
5?????????ktv
????:?????
????
6
%
???:??