5044| 10
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帶彈簧墊圈的螺栓、螺釘標準號多少? |
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點評
這種心態不適合搞設計。
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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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