00000nz  a2200000n  4500
001  KSH1998039261
005  20030904182329
008  980429 n azknn|abn          |a a|a    | 
150  ▼a임계장[臨界場]▲
450  ▼wr▼i영어▼acritical field▲
550  ▼a임계 온도[臨界溫度]▲
550  ▼a제2종 초전도[第二種超傳導]▲
550  ▼a초전도 자석[超傳導磁石]▲
550  ▼a초전도[超傳導]▲