油压操舵机油管路 telemotor circuit

发动机机油管路 engine oil line

油箱机油管路 tank oil line

发动机机油管路组件 engine oil lines group

充气回路机油管路 charge circuit oil line

变速箱机油管路 transmission oil line

发动机燃油管路 engine fuel line

推土机岐管油路组件 bulldozer manifold lines group

发动机机油压力管路 engine oil pressure line

机具油管路连接 implement oil line connection