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下圖是手動組件的剖視圖,圖中1的名稱是什么?一般用什么材料加工? |
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小黑屋|手機(jī)版|Archiver|機(jī)械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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