其方法是往硅片上涂上一层二氧化硅防护膜。

The method is to coat a wafer of silicon with a protective layer of silicon dioxide.

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介绍了家用抽油烟机油污防护膜的原料、配方、制备过程和使用方法。

This paper introduces the raw materials, formulation, preparative course and application method about PVA protective film in the range hood of household oil-smoke drawing machine.

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透气莹亮：珍珠美白精华，在肌肤表层形成防护膜，防止皮脂氧化造成肤色暗黄现象。

Breathe freely and pure bright: pearl whitening essence can form protective film on the surface of the skin to prevent yellowness of skin caused by oxidation.

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