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01/29 Çü»ó±â¾ïÇÕ±Ý-²ÉÀÌ ÇÇ´Â ¸ð½À ±¸Çö
01/29 ÃÊ°æÇÕ±Ý(hard metal)
01/29 ÇÕ±Ý Á¦Ç°µé
01/29 ÇÕ±Ý-µÎ¶ö·ç¹Î(Duralumin)
01/29 ´ÏÄÌÇÕ±Ý(nickel alloy)
01/29 °æÇÕ±Ý(light alloy)
01/28ÇÏõ(river)
01/24È£¾È Á¾·ù¹× ±¸Á¶(revetment)