7855| 20
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320直徑軸斷了,,求原因 |
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評(píng)分
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點(diǎn)評(píng)
樓上說(shuō)的很有道理,,軸的階梯有圓弧角最好,,另外35Crmov含碳量少,調(diào)質(zhì)之前滲碳會(huì)比較好,,可能說(shuō)的不對(duì),,請(qǐng)見諒,
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