A.Ⅱ型鋰基脂 B.Ⅲ型鋰基脂 C.Ⅱ號(hào)鈣基潤(rùn)滑脂 D.Ⅲ號(hào)鈣基潤(rùn)滑脂
A.4.5~8.5mm B.4.5~14.5mm C.6.5~8.5mm D.6.5~14.5mm
A.20mm B.30mm C.40mm D.50mm