01052na  a2200265   4500001001300000005001500013008004100028024002700069035001800096035002700114100002200141370004800163372004000211372004000251373005600291374005700347375001100404377002200415400002400437400002400461400002100485670015500506670007100661670005400732KAC20184629220220819140343180621 b aznnnaabn          fa aaa      7 a00000004676275102isni  a(KRI)10093878  a(KISTI)ADPER00000802611 a장세기,d1957-  c한국(국명)[韓國]0KSH20000101452nlsh  a철도[鐵道]0KSH19980045772nlsh  a금속[金屬]0KSH19980027352nlsh  a한국철도기술연구원 (책임연구원)s1989  a연구원(연구자)[硏究員]0KSH19980377142nlsh  a남성  l한국어l영어1 aChang, Segi,d1957-1 aChang, Seky,d1957-1 aChang, S.d1957-  aWear and chattering characteristics of rail materials by ultrasonic nanocrystal surface modification, (Korean Society for Precision Engineering), 2015  a한국과학기술정보연구원(KISTI)uhttps://www.kisti.re.kr/  a한국연구자정보(KRI)uhttps://www.kri.go.kr