A.0.1~0.5mm B.0.5~1mm C.1~1.5mm D.1.5~2mm
A.機(jī)動進(jìn)給 B.手動進(jìn)給 C.機(jī)動或手動進(jìn)給 D.較大的進(jìn)給量
A.20mmB.60mmC.180mm