Machining the spark plug hole and counter bore at a compound Angle.
加工火花塞孔与反孔的复合角度。
The machining way of the series of supporting hole is to bore hole by coordinate.
支承孔系的加工采用的是坐标法镗孔。
The machining of valve bore with diamond reamer features high productivity, long service life of reamer and lower surface roughness.
采用金刚石铰刀加工阀孔，生产率高，刀具寿命长，表面粗糙度低。
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