1·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。
2·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。
3·In accordance with the present invention, a liner for a hat, cap or similar head covering comprises a layer of moisture absorbent material which is backed by a layer of moisture impervious material.
按照本发明，是一顶帽子，帽子或头罩类似按照班轮由层的水分吸收材料是由一层的水分不透水物料支持。
4·This material is impervious to gases and liquids.
气体和液体都透不过这种物质。
5·The grouting material is forced into construction through the holes of its inside and impervious membrane formed in its outside.
膜体防渗灌浆是通过在结构内侧的钻孔将灌浆材料压入结构外侧形成防渗膜体的方法。
6·It could not pass through material impervious to water such as mica.
它不能通过云母这样的不透水的物质。
7·The jacket is made of rubber, plastic or synthetic material that is impervious to moisture and dust.
这件夹克是由橡胶、塑料或合成材料不受水分和灰尘。