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???? ??????? ??? ??????? ?????? ??????? ??????. ????? ???? ????? ??????? ?????? ?? ??????? ???????? ????? ????? ??? ??????? ?????? ?????? ?? ??????? ???????. ????? ?????? ?????????? ???????? ?????? ?? ???? ???? ?????? ?????????? ?? ????? ???? ???????? ?? ??? ???????? ??????? ???????? ?? ??? ??? ??? ????. ?????? ?? ????? ??????? ?????? ????? ??????? ???????: (1) ??????? ?????? ???????? ??? ??????? ???? ??? ??? ??? ????? ?? ???? ?????? ??? ????? ????? 5 ?????? ????? ???? ??????? ??????? ??????? ??? ??????? ??????. (2) ??????? ??????? (?? ??????? ?????? ????????)? ??? ??????? ???? ??? ??? ????? ????? ?????? ????? ????? 2π? ?????? ????? ??????? ?????? ???????? ?? ?????? ?????. (3) ??????? ?????? ?????? ??? ??????? ???? ??? ??? ????? ?????? ??? ????? ??????? ?????? ??????? ?????????. (4) ??????? ?????? ???????? ??? ?????? ??????? ?????? ????? ?? ?????. (5) ??????? ??????? ?? ????? (??? ?? ??? ?????? ?????). (6) (??????? ??????? ???? ??? ???? ???? ???? ????? ??????) ????? ?? ???????.
???? ????????:almuteiriashak970@gmail.com
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????: +86-18037419427
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