impervious rock meaning in English
不渗透岩石
不透水岩
Examples
- The result shows that the profile of the main dam and the second dam and all the impervious rock fill material have no problem . the total seepage volume is 3 . 9092x106m3 per year . it occupies 0 . 037 % of the average inflow of the reservoir , which is acceptable from the point of view of the water resources utilization
分析结果：确定采用的主、副坝坝剖面及各种筑坝料在渗透稳定性方面均无问题；全坝渗漏总量为390 . 92万m ~ 3年，占多年平均入库水量的0 . 037 ，从水资源利用的角度是可以接受的。