6431| 11
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為什么壓鉚螺柱的底部是六邊形的? |
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點評
這個好看,哈哈!
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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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