00000nz  a2200000n  4500
001  KSH2002019956
005  20021111103928
008  020827 n azknn|abn          |a a|a    | 
150  ▼a평균 변화율[平均變化率]▲
450  ▼wr▼i영어▼aaverage rate of change▲
550  ▼a변화율[變化率]▲
550  ▼a함수[函數]▲