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點評
樓主不能只說材質(zhì)、硬度、公差,孔徑、有效深度也很重要,如果有興趣可以探討一下,
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Archiver|手機版|小黑屋|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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