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HDC??? ?????? ?????? 13? ?3? ‘??? ????’ ???? ??? ‘??’ ??? ??? ?????? ????? ???. ??? ????? ?? ???? ???? ?? 2020? ????. ? ??? ??? ???? ‘??’? ??? ?????(IoT) ??? ??? ??? ???? ?? ??? ????. ? ?? 2011? ????? ?? ??? ??? ???? ???? ???.
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