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1ÆäÀÌÁö ³»¿ë : 1 2019?? 10?? ?·ì§¸ì£? ?´ì?? ICT ??ì¤??? ???? 목차 본문 19.10.14 ???¸ê? ??ì¤??? ???? ??ë§?- ë¹????? ??ì¤??¼ë? ê¸?ë¡?ë²? 무ë??ë¥? ë§??¤ë?? ?¨ì?? 19.09.25 ì¤?êµ??? ì§?????ì¤? ê´?리조ì¹? ì´??? ê´???, 미국 ANSI?? ???? 19.09.27 ???? CEN, ASTM Internationalê³? 기ì?? ???? ì²´ê²° 19.10.11 ???? DIN, 무ì??ê³? êµ?????ì¤????? ???? ?¸ë?¸ë?? ê°?ìµ? ?? ê²???ë¬? 보기 TTA ?????´ì? ?? ??ë£?ë§??? ?? TTA ê°???ë¬? ?? ??ì¤??? ?´ì?? ë°? ?´ì?¸ë????

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