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Materials for Rotating and Static Rings: Impregnating resin (metal) graphite, Carborundum, hard alloy, etc.
动、静环材料：浸渍树脂(金属)石墨、碳化硅、硬质合金等。
youdao
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Materials for Rotating and Static Rings: Impregnating resin (metal) graphite, Carborundum, hard alloy, etc.
动、静环材料：浸渍树脂(金属)石墨、碳化硅、硬质合金等。
youdao