impermeable barrier

基本解釋

A. It Can make blood-brain barrier impermeable.
它可以使血腦屏障不具滲透性。
The steady-state flow mathematical model of arbitrary shaped heterogeneous reservoirs with impermeable barrier is constructed in this paper.
建立了考慮源（匯）影響的含有不滲透區(qū)域復(fù)雜邊界條件下非均質(zhì)油藏穩(wěn)定滲流的數(shù)學(xué)模型。
Although skin can be a relatively impermeable barrier, a few drugs have just the right physical and chemical characteristics to cross it at reasonable rates.
雖然皮膚是相當(dāng)不易穿透的障礙，但少數(shù)藥物的物理化學(xué)特性，恰好能讓這些藥物以合理的速率穿過皮膚。