2723| 8
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螺紋孔如果是鋁合金型材,強度比螺釘承載力折減多少? |
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點評
螺套也是螺紋安裝的~~~~~~···
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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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