樓主: 耳總不是胖聰
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用到304材質(zhì)的軸,如何熱處理硬度達(dá)到230-250HB? |
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點(diǎn)評
對于設(shè)計(jì)者,材料的屬性,是先應(yīng)該了解了才去用的。
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