铸铁件含碳量高，结构疏松、表面有大量砂眼等缺陷，增加了电镀的难度。
High carbon content of iron castings and defects of incompact structure and a great deal of sand holes on the surface of iron castings make it difficult for electroplating.
铸铁件含碳量高，结构疏松、表面有大量砂眼等缺陷，增加了电镀的难度。
High carbon content of iron castings and defects of incompact structure and a great deal of sand holes on the surface of iron castings make it difficult for electroplating.
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