若鉸削速度為 10 m/min，以 8mm 之機械鉸刀切削鋁合金，其主軸轉數約為多少？ (A) 80 rpm (B) 625 rpm (C) 1,250 rpm (D) 2,500 rpm (E

問題詳情

80.若鉸削速度為 10 m/min，以 8mm 之機械鉸刀切削鋁合金，其主軸轉數約為多少？
(A) 80 rpm
(B) 625 rpm
(C) 1,250 rpm
(D) 2,500 rpm
(E) 以上皆非

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