The;
Key;
Laboratory;
of;
Biomedical;
Information;
Engineering;
of;
Education;
Ministry,;
Separation;
Science;
Institute,Xi'an;
Jiaotong;
University,;
Xi'an;
710049,;
China;
The;
Key;
Laboratory;
of;
Biomedical;
Information;
Engineering;
of;
Education;
Ministry,;
Separation;
Science;
Institute,Xi'an;
Jiaotong;
University,;
Xi'an;
710049,;
China;
nonlinear; chromatography,; Lagrangian; description,; recursion; equations,; convection-diffusion; equations,; shock; waves.;