porous layer

基本解释

One is on top of the upper non-porous layer, the other is between the two non-porous layers.
一个在上面那个不渗透层的上部，另一个在两个不渗透层之间。
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The current forms a porous layer on the one or more surfaces of the semiconductor material in contact with the electrolyte.
电流在与电解质接触的半导体材料的一或多个表面上形成多孔层。
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The outer porous layer is damaged after corrosion, while the inner dense layer played a key role to protect the coating from corrosion.
经一定的腐蚀时间后，微弧氧化陶瓷膜的多孔层最终遭到破坏，而紧密层对防腐蚀起着至关重要的作用。

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