imperviousness

1. I tried to erect a facade of imperviousness and self-confidence.
   我竭力装出一幅不受外界干扰，十分自信的样子。
2. Influence of Flyash on the Compressive Strength and Imperviousness of Concrete
   粉煤灰对混凝土抗压强度、抗渗性性能的影响
3. The measurement of actual works also explained that the use of compound geotextile in rock fill dam surface can reduce the amount of leakage water by 60%, the effects of imperviousness are obvious.
   此外，实际工程观测也说明，砌石坝构筑复合土工膜坝面防渗体后，漏水量减少了60%，防渗效果良好。
4. Analysis for groution effect and dam observation results show that grouting effect and imperviousness of curtain are satisfactory.
   从灌浆成果资料和大坝观测成果资料分析，灌浆处理的效果是好的，帷幕的防渗能力是稳定的。
5. High density polyethylene ( HDPE) film have many advantages, such as high-strength, imperviousness, corrosion resistance, age resistance, convenient to construct, and so on.
   高密度聚乙烯膜具有强度高，防渗性能好，抗腐蚀、抗老化能力强，施工方便等优点。
6. The fact that the impervious technique of high-pressure gunite is feasible for the completely decomposed granite in the Three Gorges was validated by the project practice, and the imperviousness can be guaranteed.
   工程实践证明高压摆喷防渗技术在三峡全风化花岗岩中是切实可行的，防渗可以得到保证。

noun

1. the quality of being impenetrable (by people or light or missiles etc.)

   Synonym:    impenetrability