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The surface has great difference between the spark machining and the cutting.
电火花加工的表面与切削加工的表面有很大区别。
youdao
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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。
youdao
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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。
youdao