The Complete Book of 100,000 Reasons Why
Favlit. ten thousand reasons why
为什么行李箱用万向轮？
简单的摘要：行李箱用万向轮的原因主要是万向轮移动灵活、转向方便以及减少推行阻力。
1、移动灵活：万向轮可以360度旋转，行李箱可以随意向任何方向移动，即使在狭窄或拥挤的空间也能轻松操控。
2、转向方便：万向轮的设计使得行李箱在转向时无需费力调整方向，推行者只需轻轻推动，行李箱即可随力量方向改变移动路径，提高了使用的便捷性。
3、减少推行阻力：万向轮与地面的接触面积较大，且可以自由旋转，这大大减少了推行时与地面的摩擦力，使得行李箱在推行过程中更加省力。
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