樓主: 趙冬
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組合機床鉆床,,用的麻花鉆,,有導(dǎo)向。 |
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點評
圖片上清清楚楚畫出用梯階麻花鉆在工件上制作臺階孔,,前端鉆頭直徑8.5,后面擴孔12,,你說導(dǎo)向部分應(yīng)該是多少,?
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