在一定范围内，皮革材料的透气性存在一定的随机性。
In a certain range, the air permeability of leather material has a certain randomness.
网状材料透气上层。
皮革及其它鞋用材料的透气性存在两向差异。
The air permeability of leather and other shoe materials has the bi -differential property.
混合皮革和麂皮的鞋面材料，提供出色的舒适性和透气性。
Mix of leather and suede upper materials, which provide excellent comfort and breathability.
透气背板可用塑料或其他材料制成。
The air permeability back board can be made of plastics or other materials.
透气背板可用塑料或其他材料制成。
The air permeability back board can be made of plastics or other materials.
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