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metal:filler,
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metal:powder,
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solid:material,
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powdery:filler,
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natural:material,
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fine:material,
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metallic:powder,
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metallic:material,
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smooth:surface,
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raw:material,
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metal:material,
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pure:powder,
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powdery:material,
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conductive:powder,
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conventional:filler,
Category Nuances for copper_powder:
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metal,
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solid,
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fine,
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metallic,
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raw,
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smooth,
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powdery,
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pure,
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conductive,
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conventional,
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natural,
Simple Categories for copper_powder: