000  $anz n  2
000  $a주제어
001  $aKSH1998003381
005  $a20021219000000
008  $a980429 n azknnaabn          |a a|a    | 
150  $a시분할 다중화[時分割多重化]
450  $aTDM
450  $wr$i영어$atime division multiplexing
550  $wg$a다중화[多重化]
550  $a멀티플렉서[multiplexer]
550  $a시분할 다중화 장치[時分割多重化裝置]