短语词组短语drop -hanger bearing 悬挂轴承hanger bearing assembly 悬管轴承组合dro -hanger bearing 悬挂轴承elevator hanger bearing 链耙吊架轴承post hanger bearing 柱式吊架轴承longitudinal wall hanger bearing 墙托架轴承;墙托架 返回 hanger bearing