?? ??????? ???? ????????????????? ???? ???????? ??? ????? ??????? ?????????, ??? ?? ???? ????? ??????? ???? ?? ?????? ?????????????????????
1. ????????? ????????: ??? ??? ??? ??????? ??? ?????????? ???? ??? ???? ??? sheet metal shell ??????????? ???? ???????? ?????? ??? ??????????? ???????. ?? ??????? ??? ??????? ?????????? ????? ?????? ??????, ??? ?????????? ????, ????????? ????, ????????um ?????, ??. ????, ????????? ??? ??????
2. ?? ???????? ?????????: ?? ????? ?? ???????? ????????? ????? shell ???????????, ?? ?????? ?? ????????????difficulties, ??? ?? ???????????????palielinājum ??? ???????????????? ??? ?? ????, ??????????????? ???????, ????????????? ??????, ????? ?????? ???? ??????????? ????????? ???????????????? ??? ???? ???? ?? ?? ??
3
4. ??????????? ??????????: ??????????? ?????????? ??? ?????? ??? ?? ???????? ?????????? ???? ?????? ????? ??? ???????? ???? shell ???????????. ??? ?????????? ??????, ??? ??????????? ??????????? ???? ???? ??? ??????? ????? ?? ????? ?????? ????? ??? ????????????? ??? ???????? ????.
5 ?????? ??????? ?????????????? ????????????????????? ??? ?????? ??? ?????? ??? ??????? ???? ??? relatively ????? ????????. ??? ?????? ????? ????????????????? ??????????? ??? ????? ??? ????????.
?? ??????? ???? ?????????????????? ??????????? ??? ?????? ???? ????????? ????????, ??? ??? необходимо ?? ?????? ????????? ???????????, ??????? ???????????, ??????????? ???????????? ??? ?????????? ?????