Earth is stratified now with 24 planes, and those who exist in deep slumber of non-awakening are in the lowest tier of all.
地球现在分成24个层面，那些处在非觉醒的昏睡中的人位于所有层面的最底层。
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Methods The method of stratified cluster samping was used to survey 181 music professional college students and 183 non-music professional college students with EPQ-RSC.
The results show that the excited long wave disturbance could first obtain energy from the stratified heterogeneity of basic state, then from the interactions among non-linear waves.