A.要不斷地加冷卻潤(rùn)滑劑 B.可以干鉸 C.要加乳化液進(jìn)行冷卻 D.要加注礦物油
A.0.05~0.15mm B.0.15~0.30mm C.0.20~0.25mm D.0.25~0.40mm
A.0.10~0.15mm B.0.15~0.35mm C.0.35~0.45mm D.0.45~0.50mm