Expound the importance of the gas device reconstruction from the skidroad reconstruction, blocking the frame, the reconstruction of the oil pressure system and coal supply system.
从炉底滑道改造、封闭机架、油压系统、给煤系统的改造几方面，阐述了造气系统设备改造的重要性。
2
The skid marks on the road showed how fast the car had been travelling.
公路上留下的滑行痕迹说明这辆车当时开得有多快。
《牛津词典》
3
I looked to the road where they first went off. There were skid marks, but they were faint; as if they were years old.