![TheLeaningTowerofPisawasnotleaningwhenitwasbuiltin1173a...]( "TheLeaningTowerofPisawasnotleaningwhenitwasbuiltin1173a...")
- 问题详情：TheLeaningTowerofPisawasnotleaningwhenitwasbuiltin1173anditwasstraightlikeapole.Itstartedtoshiftdirectionsoonafterconstructionbecauseofpoorfoundationinadditiontothelooselayerofsubsoil(底土).Atthebeginning,itleanedtothesoutheastbeforetheshakyf...
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