4962| 14
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請教:絲錐后面有個“方”,而鉆頭沒有,是因為絲錐扭矩大嗎? |
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小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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