7489| 12
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這種內(nèi)錐孔和孔內(nèi)的平鍵槽是怎么加工的? |
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點(diǎn)評(píng)
那就計(jì)算吧 拿起計(jì)算器 就是三角函數(shù)了 也不需要太大的夾持力 因?yàn)槭蔷€切割嗎
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