题目

英语翻译
地下渗漏问题一直是地下防水工程的棘手问题,从水的渗漏现象观察,水是从“孔”、“缝”中渗透的,那就必须采用防水材料对设防基层的“孔”和“缝”进行设防,防止水从“孔”“缝”中通过.孔有毛细孔和可见小孔洞,缝有微细裂纹和动态变化的可见缝.设防时不但要能防止渗透,还要求耐久,当外力损害时也不应当出现渗漏.

提问时间：2020-07-31

答案

The problem of underground leaks are the most difficult problem facing the underground water pipes defence work. Water mostly leak from holes and cracks, which must use water proof materials to reduce holes and cracks from grass root level. Prevent water leaking from holes and cracks. Prevent small and visible holes, small cracks and visible cracks causing by movement changes.Prevention is not just to stop leaks but must be also durable. And leaks should not appear when damaged by an out side force.
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