A.1mm B.1.5mm C.2mm D.3mm
A.0.075mm B.0.54mm C.0.58mm D.0.75mm
A.鑄鋼車(chē)輪 B.輾鋼車(chē)輪 C.幅板孔車(chē)輪 D.無(wú)幅板孔車(chē)輪