Weihua ??? ???????? ??? ????? ????????? ?? ??? ????? ???????? ??? ??????, ?? ??????? ????, ?????????? ?????? ?????, ??? ?????? ????? ?????? ?? ? ???? ?????????????? ?????? ??? ??????? ???????? ??? ??? ???? ????? izing ?????? ??????. , ??? ?????? ??? ????, ??? ???? ?????? ????? ??. ??????? ??? ???? ???????? ???????. ?????? ???? ?????? ???????? ?? ????? ??????????? ???????? ?????????!

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?I. ??????? ?????? ??????????? ?????

(1) ??????? ???? ???? ??? ???? ?? ?????? ???? ????? ???? ????? ????? ????? ?????? ?????, ???? ?????? ????? ??? ?? ?????.

(2) ???? ?????? ??????? ???????? ???????????? ?????? ????? ????? ???? ????, ??????? ???????? ????????? ?? ?????? ??????? ??????? ?????.

(3) ?????? ?????? ?????????????? ??? ???????? ??????, ???????? ??, ??? ??????, ??? ??????, ??? ??????? ????????.

(4) ??? ???????????????, ??? ????? ?????????, ?????????????? ?? ??????????????? ??? ?? ????? ?????.

(5) ??????? ???????? ?????? ?? ??? ??????? ???????????? ??????? ?? ??? ??? ????? ???? ??.

????. ??????? ?????? ???????? ????? ???????:

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

(1) ?????? ??????? ????? ????? ?????? ????????: ?????? ??????? ?? ?????????? ???????????? ???? ?????? ????? ???? ?????????? ??? ??????????, ???? ???????? ????? ???????, ????? ???? thickness ??? ???? ???????, ???? ???? ?? ???? ??????? ?? ???? ??????? ????? ?????. ?????????? ?????????????? ???????? ?????? ??? ?????. ???? ?????? ??????????? ???? ?????????? ??? ?????????? ?????? ????, ????? ??? ??????? ?????????? ?????????? ????? ?????. ???? ?????????? ???????????, ???? ?????? ??????.

(2) ?????????? thickness ??? ????? ???? ?? ????????: ?????????? thickness ??? ????? ?????????? ?????? ??? ?????. ??? ????? ??????? ?????????? ??? thickness ????? ?????? ?????? ?????????? thickness ??? ????? ??? ????? ?? ??? ?? ???????? ????? ?????? ??????? ????? ???? ????? ????? ???, ????? ?? ????? ??????? ? ???? ??? ???.

????. ??????? ?????? ???? ???? ?????

(1) ??????? ???? ????? ?????? ????? ?? ????? ???????? ?????. ???????????? ??? ???? ???? ????? ???????? ????? ?????. ?????? ????? ?? ????? ????????? ?? ????? ???? ??? ????????????? ?????? ???? ???? ??? ??.

(2) ?????? ???? ???? ???????? ????? ???? ????? ????? ?????? ???? ?? ?????? ????? ?????? ?????????????????. ???????? ????????????? ????? ????? ???????????? ???????? ?? ??????? ??????? ???? ?.

(3) ???????? ???? ??? ??????? ????????????? ???? ?????????? ??? ?? ????, ??????? ?????? ???? ???? ???????? ???????? ?????? ???? ?????? ?????? ???? ?? ????? ???? ???? ??? ??? ???? ??? ?????? ?????? ???? ?????? ???????? ???? ?????? ?????? ?? ???? ????? ?????? ???????? ??? ???? ???????? ???????? ??? ?? ?????.

(4) ?? ??????? ???? ???????????? ?????? ????????? ????? ???? ????? ?????? ???? ?????? ????, ???? ???? ??????????????? ????? ????? ????, ??? ???? ???, ????????? ?? ????? ????? ?????? ???.

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