???:??????
“?????400?4????”????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??
????:??????????-30°C ????
????:??????????-30°C ????
??
????:
1??????400?4????:??????????
2??????
3????????
4???????????
5???????
???:??????
????
6
%
???:??