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O型圈的截面尺寸的選擇,有什么依據么? |
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點評
不應該是先選好O型圈,再設計溝槽么?
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小黑屋|手機版|Archiver|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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