00787nam a2200193 c 4500001001300000005001500013008004100028041001300069049003200082052001300114056001100127082001400138245017700152260003900329300004100368502010200409504002900511700005300540KDM20070763720200729170203070227s2007    ulkad      AL 000   kor  0 akorbeng0 lEM3817775lEM3817776c2fDP01a557b7-1  a557240 a625.222100a鐵道車輪의 接觸疲勞壽命向上을 위한 表面除去 効果=x(The)effect of surface removal on enhancement of contact fatigue life in railway wheels/d徐正源  a서울:b成均館大學校,c2007  axii, 157 p.:b삽화, 도표;c26 cm1 a학위논문(박사) --b成均館大學校 大學院,c機械工學科 材料工學專攻,d2007  a참고문헌: p. 148-1541 a서정원,g徐正源,d1969-0KAC2018553304aut