短語詞組短語Bed positive confining 下阻巖牀Bed negative confining 上頂巖牀confining bed 不透水層;封閉地層upper r confining bed 上覆隔水層effective confining bed 有傚隔水層confining bed clothes 不透水層lower confining bed 隔水底板confining bed of aquifer 封閉含水層Negative confining bed 上頂巖牀 返回 bed confining