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大家好!粗牙公制螺紋鉆底孔尺寸在成大先機械設計手冊(第6版)多少頁? |
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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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