A wreckingcar of local traffic police arrived later tried to pull out the truck through steel wire rope.
交警部门的救援车停在货车后面，两辆车由两条钢丝绳连在一起。
2
It is proved in practice that the development of this testing device is successful. It solves a key technical problem in fault elimination of railway wreckingcar.
经工程实践表明本实验装置的研制是成功的，解决了铁路救援机车故障排除中的一个关键技术问题。
3
This article introduces the performance testing device on the railway wreckingcar WYZ-8A active control valve board, and explains the testing method of each performance test in details.