Burned coating: refers to the surface coating seriously dark, rough, such as carbon color generally. (means high current density zone).
镀层烧焦：指镀层表面严重黑暗，粗糙，如碳色一般。(指高电流密度区)。
Burned coating: refers to the surface coating seriously dark, rough, such as carbon color generally. (means high current density zone).
镀层烧焦：指镀层表面严重黑暗，粗糙，如碳色一般。(指高电流密度区)。
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