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TNGGR陶瓷刀粒R-S京瓷槽型三角形外圆精车数控车刀片 TNGG160402R-STN60正刀0.2角
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京瓷55度菱形走心机精车刀片DCGT11T302 11T304ER-UTN60PR930钢件 DCGT11T302ER-U TN60 陶瓷
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