短語(yǔ)詞組短語(yǔ)impermeable barrier layer 非滲透性隔層impermeable barrier or barrier 隔層gas impermeable barrier 不透氣的隔擋層tough impermeable barrier 堅(jiān)韌不滲透阻擋層impermeable barrier material 防滲土料 返回 impermeable barrier