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3、S A ISO 361:2009 . 1 , , , (ISO) , . 2 1975 1 ISO 361, Basic ionizing radiation symbol , “KS A ISO 361 : 2009, ” . . 3 , , . 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS A ISO 361:2009 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Basic ionizing radiation symbol ICS 01.080.20 ; 13.280
