Must do derusting and to oxidation film processing, generally use chemical polishing or electrolytic polishing.

必须先做除锈及去氧化膜处理，一般使用化学抛光或电解抛光。

youdao

Must do derusting and to oxidation film processing, generally use chemical polishing or electrolytic polishing.

必须先做除锈及去氧化膜处理，一般使用化学抛光或电解抛光。

youdao