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

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