2889| 7
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大家?guī)臀铱纯催@個怎么彎 |
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點(diǎn)評
正解,。
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點(diǎn)評
臨時(shí)想的辦法,就是做個簡單的模具,,能保證所有R50的圓弧能一起壓出來,,在小型的壓力機(jī)上就行
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