4758| 11
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加工以后變形比較厲害,用什么方法才能不變形,換材質(zhì)也可以 |
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點(diǎn)評(píng)
這么長(zhǎng)條,顯得薄,需要熱處理和人工時(shí)效消除內(nèi)應(yīng)力
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