Why will element 3 return to the equilibrium position?
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更新1:
Why will element 3 return to the equilibrium position? After a quarter of a period??
Why will element 3 return to the equilibrium position? After a quarter of a period??
收錄日期: 2021-04-21 22:42:40
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160606051919AAR1oPa