Announcements of dividing building place classification

@inproceedings{Yunfen2008AnnouncementsOD,
  title={Announcements of dividing building place classification},
  author={Li Yun-fen},
  year={2008}
}
It expatiates the physical significance of double parameters in dividing building place classification,commentates present problems in dividing building place classification,indicates that soil layer equivalent cutting wave speed can not be used to divide the style of place soil,also can not use soil layer equivalent cutting wave speed value to average place.