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

Through the principle and construction of ??????? ??????? ????????, we have a preliminary understanding of ??????? ??????? ????????. Manufacturers also need to have a more detailed understanding of ??????? ??????? ???????? parameters when purchasing ??????? ??????? ????????s.