impervious material

基本解释

All surfaces inside the building should be of impervious material to permit thorough washing.
建筑里所有的表面都应当用不透水的材料这样可以彻底清洗。
Dam core impervious material quality is critical to dam quality of Shiquanhe hydropower station.
大坝心墙防渗掺合料的生产质量是狮泉河水电站大坝质量控制的关键。
The coal and limestone storage yard must have a bottom impermeabilization system. This system may be constituted by a clay layer, a geomembrane layer, or other impervious material.
煤料和石灰石存放场必须有底部防渗系统。该系统可由粘土层、地质处理用膜层、或其他防渗材料组成。
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