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Mar 04
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“ エスカレーターというのは、階段部分と手すりとのスピードが一致していない。というか、安全のために、わざと手すりのほうのスピードを早めてあるのだという。
— エスカレーターの手すりはなぜ足場と速度が違うのか - kokokubeta; (via proto-jp) (via ohmizaiju) (via ontheroad) (via otsune)
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