00000nz  a2200000n  4500
001  KSH1998010957
005  19990430162213
008  980429 n azknn|abn          |a a|a    | 
150  ▼a기공(재료)[氣孔]▲
450  ▼a블로홀[blowhole]▲
450  ▼wr▼i영어▼ablowhole▲
550  ▼a기공 물질[氣孔物質]▲
550  ▼a주물(금속)[鑄物]▲
550  ▼a핀 홀[pin hole]▲