000  $anz n  2
000  $a주제어
001  $aKSH2001016753
005  $a20141218170242
008  $a011126 n azknnaabn          |a a|a    | 
150  $a시알 발진기[--發振器]
450  $wr$i영어$aCR oscillator
550  $wg$a발진기[發振器]