??????：??????? ??? ????????? ????? ??? ???????????? ?????????? ????, ??? ?????? ??????? ??????? ?????????越来越严格 ??? ??? ??.

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1. ????? ???? ???????? ????

? ??? ????? ??????? ?????? ????? ???????? ??? ??????? ????????? ??? ???? ???????? ???? ?? ??? ????? ??? ? ???? ???? ??????? ?????? ???????? ??. ????? ???? ?????? ???? ???? ????????? 140 MPa ?? ??????? ??????? ???? ??? 15% ?? ??????????? ?????????, ???? ??? ???? ???? ????? ????????? ???? ???? ????? ??. ?? ? ???? ???????? ???? ???? ??????? ??? ??? ??, ?? ????? ???? ??????? ??????? ???? ????? ??.

2. ??? ???? ???? ???????? ????

??? ???? ???? ?????? ???? ?????? ????? ????????? ???????, ?? ????? ?????? ????? ???? ????? ????????? ??? ??. ??? ????Highly wear-resistant ??????? ?????? ??, ?? ???? ??????????? ???? ????? ????????? ??? ??? ??. ??????? ???? ???? ?????? ???? ????? ??? ???? ??? ???? ???? ???????? ???? ??????? ????? ???? ???? ?????? ??????? ???? ??? ??? ??????? ????????? ???????? ?? ???? ?? ???? ????? ??? ??.

3. ??????? ????? ???????? ?????

??????? ????? ???????? ????? ???? ???????? ??????? ??? ???? ??. ? ?????? ???? ??????? ?? ??? ??????? ?? ???????? ???? ???????? ???? ??. ??????? ????? ???????? ???????? ???? ??????????? ?? ??? ?????????? ????? ??? ?? ??? ???? ???? ???? ???????? ??? ?????? ?????? ?? ??????? ?????? ??. ??????? ????? ???????? ????? ???? ???????? ??????? ?????? ?????? ??, ??????????? 30% ?????? ?????? ??? ???? 40% ?????? ????? ?? ??. ???? ???????? ??????? ??? cavities ?????? ???? ??? ?????? ???????? ????? ?? ??? ???????? ????? ??.

4. ???????? ???? ???????? ????

???????? ???? ???????? ???? ??? ???? ??????? ???? ???? ???? ???? ?????? ?????????? ??? ???????? ????? ????? ????? ??? ???? ??. ???????? ???? ???????? ??????? ?? ?????? ??: ????? ???????? ???????? ???? ???????? ???? ??? ?????? ???????? ???? ???????? ????. ???? ????? ???? ??????????? ??????? ??? ?? ??? ????? ???????? ??????????? ????? ??, ???? ?? ???????? ???? ????? ?? ????? ???? ?????? ????? ???? ?? ???? ?????????? ???? ??? ????? ??.

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