This happens because the insulating layer is hydrophobic, meaning it tends to repel water.

出现这种情况，是因为绝缘层厌水，意即它往往排水。

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The cuticles of most vascular plants are covered with a thin layer of largely hydrophobic constituents.

大部分维管囊植物的角质层都被有薄薄一层很疏水的成分。

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Specifically disclosed is a catalyst layer for solid polymer fuel cells which is composed of a catalyst obtained by reducing a platinum oxide, a hydrophobic agent and a proton conducting electrolyte.

具体公开了一种用于固态聚合物燃料电池的催化剂层，其包括：通过还原铂氧化物获得的催化剂；疏水剂；和质子传导电解质。

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While P2i describes its invisible "hydrophobic layer" as covering the exterior and interior of a product, HzO touts what it calls "WaterBlock" technology, which is applied to the internal circuitry of a device to protect it from moisture.

CNN: Waterproof phones and tablets make a splash