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地铁里的楼梯为什么走着很重

更新时间: 2020-10-26 00:00:00     

这种感觉跟楼梯材质有关,一般来说实心的水泥楼梯走起来更轻松,原因是踩上去水泥形变极小,通俗点来说,力气不会因为形变损失,其他的楼梯,例如商场中的手扶梯,如果停下来,走的话就明显感觉更费力,因为它会有下陷的感觉,力没能及时反馈回来。

关键词: 地铁 楼梯 为什么

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