如果岩石是渗水的——岩石中有许多小孔，比如沙石——水将渗透过这些小孔，直到由不渗透水的岩石构成的那个层面。
If the rock is porous — has many small holes in it, like sandstone — water will sink through these holes until it reaches a layer of rock that is not porous.
聚氨酯灌注XPS复合面板外墙外保温技术是一种新型的外墙外保温系统，其节能效果好，与基层粘结力强，不渗水。
As a new technology of exterior insulation, polyurethane perfusion XPS compound plate has characteristics of good energy saving effect, large bond force and no seepage.
为保证不漏光、不渗水，必须要用中性硅胶密封面板与扣边接触处（这也是一种容易有效成本低廉的防水措施）。
In order to ensure no light leakage, no water seepage, must use neutral silica gel sealing panel and the buckle side contact (which is a waterproof measures easily and effectively in low cost).
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