| 摘要 |
The invention relates to an electrode comprising a substrate (F) having at least at one of its sides a coating made of an electroconductive diamond, the coating comprising at least one first diamond layer (B, D) having a first average grain diameter and at least one second diamond layer (C, E) having a second average grain diameter, the first average grain diameter being bigger than the second average grain diameter, and the second diamond layer (C, E) overlying the first diamond layer (B, D).
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