我本書話upper mantle 係liquid, lower mantle先係solid..
但係老師又話lower mantle 係solid...upper mantle先係liquid..
究竟邊個先係真?
收錄日期: 2021-04-13 16:08:04
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081002000051KK01979