A.軸肩 B.輪座 C.軸頸 D.軸端
A.玻璃纖維 B.毛棕海綿 C.泡沫海綿 D.毛氈
A.1mm,8mm,1mm B.1.5mm,13.25mm1.5mm C.1.5mm,1.4mm,1.5mm D.1mm,8mm,2mm