我厂自从改組专业修理貨車的十多年来,由于車辆检修作业場地分散,又无厂房和超重設备,因此,在車辆检修过程中,起落車工作非常困难。然而,每当車辆上下体检修竣工后,需要保証钩体中心綫至軌面垂直 Since our factory reorganized the professionally repaired truck for more than 10 years, it has been very difficult for the truck to work during the overhauling of vehicles due to the scattered site for vehicle overhaul and the absence of plant and overweight equipment. However, whenever the maintenance of the vehicle body is completed, it is necessary to ensure that the center line of the hook body is perpendicular to the rail surface