A.3/20轉(zhuǎn) B.1/20轉(zhuǎn) C.2/20轉(zhuǎn) D.0.5/20轉(zhuǎn)
A.0.04mm B.0.03mm C.0.02mm D.0.01mm
A.0.04mm B.0.06mm C.0.05mm D.0.07mm