confined aquifers

基本解釋

There are three types of aquifers: perched, unconfined, and confined.
含水層有三種形態(tài)，分別是上層滯水、潛水和承壓水。
In the United States, the problem isn't confined to surface waters. Pharmaceuticals also permeate aquifers deep underground, the source of 40 percent of the nation's water supply.
在美國，這個問題并不僅局限于地表示。藥物還會擴(kuò)散到深入底表下的地下蓄水層；那里是全國40%的給水來源。
bbs.chinadaily.com.cn
But Dr Kharaka nevertheless suggests that the sequestration of carbon dioxide should be confined to deep aquifers, where overlying layers of shale would be likely to prevent leaks.
但是，Kharaka博士依然建議，二氧化碳的固存應(yīng)該局限于深蓄水層，這些蓄水層上方有很多層頁巖疊加在一起，可以防止泄漏。