次级滤清器滤芯固定螺母
secondary filter element retaining nut
回程液压油滤清器装置
return hydraulic oil filter unit
液压传动装置滤清器回油量测器
hydraulic filter return gauge
液压油箱通气器滤清器滤芯
hydraulic oil tank breather filter element
次级滤清器固定螺栓
secondary filter retaining bolt
次级滤清器壳体固定螺栓
secondary filter housing retaining bolt