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The air permeability of leather and other shoe materials has the bi -differential property.
皮革及其它鞋用材料的透气性存在两向差异。
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The shoe body and the insole are made of polymer materials.
所述鞋体、鞋垫由高分子材料制成。
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The shoe body and the insole are made of polymer materials.
所述鞋体、鞋垫由高分子材料制成。
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