Footprint is a kind of trace information which is left on the ground by the sole surface when the human body stands or walks.
足迹是人体站立或行走条件下，脚掌面通过力的传递作用在承痕体上形成的痕迹。
The shoe's sole had a slightly textured surface.
鞋底表面有较浅的纹理。
By this unique technology, SPU sole is very light and soft, exquisite as paste for surface and good resilient and other features which are more than PU in many performance.
通过这种独有的技术，SPU鞋底具有极其轻便柔软，表面细腻如膏，回弹力好等特点，在许多性能上都超过了PU。
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