10054| 41
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大家看看我課程設(shè)計(jì)的轉(zhuǎn)盤 |
點(diǎn)評(píng)
外六角螺栓能否換成12.9級(jí)的內(nèi)六角螺栓?強(qiáng)度會(huì)不會(huì)更好些?外觀會(huì)不會(huì)好看些?裝配會(huì)不會(huì)方便些?
評(píng)分
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