A non-stick coating is required and can be damaged over time.
不沾涂层是必要的，它可随着时间的推移而损坏。
The pine wood panels are treated with a coating of lye to counteract the pine's tendency to yellow over time.
松木板用碱涂层减缓松树随时间推移变黄的趋势。
The amorphous alloy coating remained bright property which was placed in air over a long period of time.
在空气中长期放置，非晶态合金层仍保持光亮性。
The amorphous alloy coating remained bright property which was placed in air over a long period of time.
在空气中长期放置，非晶态合金层仍保持光亮性。
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