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
impermeable layer
waterproof stratum
water-resisting layer
water resisting layer
aquiterd
water barrier
Aquiclude
AQUIFUGE
waterproof layer
confining bed
Aquifer Impermeable layer
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
relatively impervious layer
relative aquiclude
relative water-resisting layer