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?????? ????? ???????? ????? ????? ?????? ??????? ??????? ??????? ???????? ????? ????? ?????? ????? ????? ?????? ?? ???????? ???? ???? ????? ???? ????? ???????? ???????? ??:
1. ????? ???????? ?? ?????? ????? ????? ?? ????? ??????? ???? ???? ?????? ????? ?????? ?????? ?? ?????? ??? ????? ????? ?????? ????? ??? 4.5 × 10-6K-1? ?? ??? ?? ????? ?????? ?????? ?? ????? ????? 15.5 × 10- 6K-1? ????? ????? ????? ?????? ????? ???? ??? 1/3 ?? ??? ????? ????? ????? ????? ???????? ???? ???? ??? ?? ??? ?????? ??? ?? ?????? ??????? ???? ??? ????? ????? ????? ????? ???????? ???????? ????????? ??????? ??? ???????? ???? ??? ???? ?????? ???? ???????? ??? ????? ???????? ?? ????? ??????.
2. ???? ?????? ?????? ??????? ?? ????? ????? ????? ????? ???? 1/2 ~ 1/3? ????? ????? ???????? ????? ??????? ????????? ???? ??? ?????? ?????? ?? ????? ????? ?????? ?? ?????? ??????? ?????? ??? ????? ????? ??????? ?? ????? ????? ??? ???? ????? ???????? ?????. ???? ??????? ?? ????? ??????? ????? ??? ?? ?????? ????? ???????? ?????? ???????? ?? ??? ??????? ?????.
3. ????? ?????? ???????? ????? ???? ???? ????? ???? ????? ?? ????? ??????? ???? ?????? ???? ???? ?????? ???? ???? ?? ?????? ????? ??????? ????????? ??? ??? ????? ??????.
4. ???? ????? ????????? ???? ??????? ?????? ????? ????? ??????? ???? ??????? ?????? ???????? ??? ??????? ??? ??? 950 ℃? ??? ????? ???? ?????? ????? ????? ??????. ?????? ????? ????? ???????. ??? ??????? ??? 950 ℃ ~ 1100 ℃? ?????? ??????? ?? ??????? ???? ????? ????? ????? ????? ????? ??? ???? ????? ???? ???? ?? ?????? ??????????? ???? ???.
5. ?? ????? ????????? ??? ???? ???? ????? ???? ??? ???? ????? ??????? ???????? ?????? ???? ????? ???? ????. ????? ???? ???? ????? ???? ??????? ???????? ????? ??? ??? ????? ???? ??? ??????.
???? ???????? ????? ???? ?? ???? ?? ???? ??????? ???? ????? ??????? ????? ???????? ?????? ??? ??????? ???????? ??? ??????? ?? ??????? ?????? ????? ?????? ???? ?????? ???????? ???????? ????????? ???????? ?? ???? ?? ????? ????? ???????? ??????? ?????? ????? ??????.




