At this time, coating and painting material also must be non - conducting type.

同时, 绝缘介质上的喷涂和附着材料也一定是绝缘的.

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Electron mirror phenomenon in scanning electron microscopy ( SEM ), resulting from non - conducting samples, was observed.

观察 非 导电样品在扫描电镜 ( SEM ) 中产生的电子镜现象.

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