A.閘瓦折斷 B.閘瓦插銷(xiāo)丟失 C.制動(dòng)缸后蓋堵丟失 D.從板座破損
A.16號(hào)615mm B.13號(hào)590mm C.13號(hào)A585mm D.17型665mm
A.緊固螺釘 B.銷(xiāo)釘 C.軸肩 D.軸承前蓋