https://youtu.be/tEEgINoP2-o
所有跟帖:
• 照這樣看應該沒有30度嗬嗬。我這兒滿嘴跑火車了啊! -anothertreeinthedese- ♀ (92 bytes) () 01/07/2018 postreply 19:52:16
• 常見的錯覺。一般人估計地麵坡度都會過高。10%的坡度看上去也會覺得有點陡。 -ProfessionalEngineer- ♂ (0 bytes) () 01/09/2018 postreply 15:20:44
• 照這樣看應該沒有30度嗬嗬。我這兒滿嘴跑火車了啊! -anothertreeinthedese- ♀ (92 bytes) () 01/07/2018 postreply 19:52:16
• 常見的錯覺。一般人估計地麵坡度都會過高。10%的坡度看上去也會覺得有點陡。 -ProfessionalEngineer- ♂ (0 bytes) () 01/09/2018 postreply 15:20:44
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