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????? ???? ???? ??? ‘??? ???? 7’? 23? ????.
???? ?? ??? ??? ?? ???? ? ?? ??? ???? ???? ??? ??? ?? ??? ?? ????? ???? ??? ????? ??? ??? ?? ??? ????? ???.
?? ??? ???? 7? 120mm? ?? ??? ??? ?????? ?? ??? ??? ???, 25mm? ???? ?? ???? ??? ???? ???? ?? ???? ??? ??? ????? ????. ?? ??? 50W?.
?? ??? ???? 7 ???? ‘2021 ??? ??? ???’? ‘iF ?? ??? ??? 2021’?? ????? ??? ???? ??.
???? ??? ?? brjeans@donga.com