【简答题】
Milling machine A. is a machine that turns a piece of metal round and round against a sharp tool that gives it shape. B. is a machine that removes metal through the use of electrical sparks( 电火花 )which burn away the metal C. is a machine tool that removes material bv rotating a cutter and angular suces, grooves(槽),contours ( 轮廓 ), and gears.
参考答案:
参考解析:
举一反三