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This is the reason that the blue white passivating film is too thin.
这是由于蓝白色钝化膜层太薄的缘故。
youdao
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Brush passivating agent on surface very 15 minutes, maintain a wet surface.
在表面上刷钝化剂15分钟，保持表面潮湿。
youdao
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Brush passivating agent on surface very 15 minutes, maintain a wet surface.
在表面上刷钝化剂15分钟，保持表面潮湿。
youdao