结果表明，裂缝不可渗透的边界模型在一定条件下可以合理使用。
It is observed that the crack impermeable model can be used under some condition.
正是皮革的结构使皮革对空气和水气具有可渗透性。
It is its structure that gives leather its permeability to air and water vapor.
可渗透的路面对高运输量的马路并不有效。
Permeable pavement is not very good for roads with a lot of traffic.
可渗透的路面对高运输量的马路并不有效。
Permeable pavement is not very good for roads with a lot of traffic.
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