好像跟國家發展程度和人口老齡化程度有關:)~
所有跟帖:
• 人口密度低,發展程度高,人口老齡化,三個加權,這樣解釋靠譜一點了吧:)~~~ -花菜- ♀ (0 bytes) () 02/17/2022 postreply 09:07:19
• 人口密度低,發展程度高,人口老齡化,三個加權,這樣解釋靠譜一點了吧:)~~~ -花菜- ♀ (0 bytes) () 02/17/2022 postreply 09:07:19
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