00000nz  a2200000n  4500
001  KSH1998010727
005  20021226000000
008  980429 n azknn|abn          |a a|a    | 
150  ▼a압전 결정[壓電結晶]▲
550  ▼wg▼a결정체[結晶體]▲
550  ▼a압전 변환기[壓電變換機]▲