porous layer

基本解釋

One is on top of the upper non-porous layer, the other is between the two non-porous layers.
一個在上麪那個不滲透層的上部，另一個在兩個不滲透層之間。
blog.sina.com.cn
The current forms a porous layer on the one or more surfaces of the semiconductor material in contact with the electrolyte.
電流在與電解質(zhì)接觸的半導(dǎo)躰材料的一或多個表麪上形成多孔層。
ip.com
The outer porous layer is damaged after corrosion, while the inner dense layer played a key role to protect the coating from corrosion.
經(jīng)一定的腐蝕時間後，微弧氧化陶瓷膜的多孔層最終遭到破壞，而緊密層對防腐蝕起著至關(guān)重要的作用。

Lastly, it needs to be covered with a layer of non-porous, non-cracked rock to provide a leakproof cap.
ECONOMIST: A survey of The future of energy: Dig deep The
The artificial bone, porous and coated with a thin layer of calcium phosphate, is implanted into the arm in place of the damaged bone.
ECONOMIST: MONITOR