00000nz  a2200000n  4500
001  KSH1998034744
005  20021019000000
008  980429 n azknn|abn          |a a|a    | 
150  ▼a응력파[應力波]▲
450  ▼wr▼i영어▼astress waves▲
550  ▼a변형(기계)[變形]▲
550  ▼a응력 진폭[應力振幅]▲
550  ▼a응력[應力]▲