-wavelength(microns)- 2,5 3 8 9 10111213141516 C二N 0-H,N-H C二0 C,N,O ◆-。(C-C.C-0,c-N) = 50084000J60034001200300028002600240020020001900180017001600150014001300120011501001050100095090085080070700650 cm-1 e一frequency()