51吃瓜

????? ???? ??? ????? ??? ???? ? ????? ???? ???? ???? ????? ? ???? ????? ???. ????? ??? ???? ???? ?????? ?? ????? ? ???? ???? ? ?? ????? ?? ??? ??? ????? ?????? ?????? ????? ??. ?. ???? ????? ?? ?????: ????? ??? ???? ???? ????? ????? ?? ????? ???? ???? ????. ?? ??? ????? ????? ?????? ????? ?????? ?? ?? ????? ?? ???? ?? ?? ????? ???? ????? ??? ?? ????? ?? ?? ?? ????? ?? ???? ??? ????? ???. ?? ???? ???? ???? ?????? ???? ?????? ???? ????? ????? ???? ? ???? ?? ????? ????? ????? ?? ?? ???? ?? ???? ????? ???. ?????? ??????: ?? ???? ???? ?????? ????? ?? ??? ????? ???? ?? ????? ?????? ????? ?????? ????? ?? ????? ??? ???? ?????? ????? ?? ????? ???? ???? ???. ?? addition, there are some differences between five axis machining and four axis machining in terms of programming, equipment structure and application scope. ???? ????? ?????? ???? ???? ????? ??? ???? ?????? ?? ?? ???? ???? ????? ??? ?? ???? ?? ?????? ? ????? ?????? ????. ?????? ??????? ???? ????? ??? ???? ?????? ?? ?? ????? ???? ???? ??? ?? ???? ?? ????? ?????? ? ??? ????? ????. ?????? ??????? ?? ????? ??? ???? ?????? ????? ?? ?????? ???? ???? ??? ? ???????? ?????? ????? ????????? ??????.