41135| 23
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螺紋擰入的深度,有標準可依嗎? |
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點評
那為什么螺母寬度沒這么寬呢?
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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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