3980| 6
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[不明就辯]-1表面粗糙度與表面光潔度的區別 |
點評
說遠了。用表面粗糙度儀。
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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