4877| 10
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想找一種取代304不銹鋼的防銹材料 |
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點(diǎn)評(píng)
見(jiàn)不到加工痕跡就行? 如今數(shù)控精車(chē)就能達(dá)到,,車(chē)好后用拉絲布拋光即可,,尺寸光度應(yīng)該能保證吧?
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