A.20mm B.25mm C.30mm D.40mm
A.1mm B.1.5mm C.2mm D.3mm
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