A、M9~M11 B、M5~M7 C、M7~M9 D、M1~M3
A、0.001~0.002mm B、0.015~0.03mm C、0.03~0.05mm D、0.1~0.25mm
A、0.05~0.08mm B、0.002~0.005mm C、0.015~0.05mm D、0.005~0.01mm