51吃瓜

?????????????? ???????? ??????????? ??? ?? ???????? ???? ??? ?????? ???????? ??????????? ????????? ????? ?? ???????, ??? ?? ??? ???? ?? ????????? ???????? ????? ????????? ???? Sheet Metal Processing includes traditional methods and technical parameters such as cutting, punching, and bending forming. ??????, ??? ???????? ???? ???? ??? ??? ????? ?? ???????????? ????????? ????? ????????????? ????????.

??? ?? ???????? ??? ?? ????????? ???????? ?????? ????, ??? ????? ???? ????????? ????? ????, ??????? ?? ??? ???? ?????????.

??? ?? ??????????? ????????, ??? ?? ??? ???????, ???????????, ????, ???? ???????????? ???? ????? ????????????? ?????? ??? ?? ??????.

??? ??????????? ???????? ????? ??? ????? ????????, ???? ???? ???? ???? ????????? ????? ????????????? ??????????? ????? ??? ?? ??????????? ???????? ??? ???????????? ??? ???

4. ???? ?? ???????????, ?? ?????????????? ???? ???? ?? ????????, ????koncentr??? ????? ????????, ??? ??? ?????? ????? ???? ???? ?????? ????????? ??? ??????.

??? ?? ????????? ??? ????????? ??? ?? необходимо, ?? ??????? ??????? ??? ?????? ?????? ??? ???????????????-???.

???? ??? ???????????? ???? ??? ????????, ??? ??????????? ??? ?????? ???? ??? ?????????? ??????????.

??? ???????? ???? ??????????? ??? ??????? ???? ?????????. ??? ?? ????? ???? ?????, ????????? ??? ?? ??????? ??!