Within first 20 hours, there was apparent weight loss of the coating, and then weight loss became slower gradually.

两种涂层均在降解20小时内失重明显；之后，失重率曲线趋于平缓。

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Within first 20 hours, there was apparent weight loss of the coating, and then weight loss became slower gradually.

两种涂层均在降解20小时内失重明显；之后，失重率曲线趋于平缓。

youdao