- impermeable cover
- impervious capping
- 不透水: waterproof; watertight; impe ...
- 盖层: overlying strata; cap rock; ...
- 不透水盖面: impervious facing
- 隔水盖层: impermeable cap formation; impermeable capping formation; impermeable capping horizon; impervious cover; insulating caprock
- 排水盖层: drainage blanket
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