00000nz  a2200000n  4500
001  KSH1998042795
005  20000411122154
008  980629 n azknn|abn          |a a|a    | 
150  ▼a광패러미터릭 증폭기[光--增幅器]▲
550  ▼wg▼a광 증폭기[光增幅器]▲