1)hydraulic system pump pressure oil,液压系统油泵压力油2)hydraulic systems pump,液压系统油泵3)hydraulic oil pressure system,液压油压力系统4)steering hydraulic system pump pressure oil,转向液压系统油泵压力油5)hydraulic tank air pressure system,液压油箱空气压力系统6)hydraulic power steering system pump motor,液压动力转向系统油泵电机