A.0.01~0.02mm B.0.02~0.03mm C.0.03~0.04mm D.0.04~0.05mm
A.0.1~0.3倍B.0.3~0.6倍C.0.4~0.7倍D.0.5~0.7倍
A.較小 B.較大 C.任何 D.規(guī)定