阻水阻气构造带
The structures impermeable to water or gas
顶板隔水层
water-resisting roof layer
隔水层
water barrier
water resisting layer
Aquifer Impermeable layer
impermeable layer
waterproof stratum
water-resisting layer
aquiterd
Aquiclude
AQUIFUGE
waterproof layer
confining bed
空气层隔热
Heat Insulation of Air Layer
路基隔水层
foundation isolation wa ter floor
相对隔水层
relative aquiclude
relative water-resisting layer
relatively impervious layer