Subsequently, the effects of subgrade freeze-thaw condition, running speed and width of railgap on the vibratory load from trains were investigated.
据此，研究了北麓河试验段路基冻融状态、列车行驶速度、轨缝宽度对路基列车行驶振动荷载的影响。
2
On most of the lines, there are protective doors on the platform to prevent people from falling onto the rail, and the gap between platform and train is only about 15 centimeters or less.
大部分线路的站台上都有防护门，防止乘客坠落，站台与列车之间的缝隙不到15厘米。
3
It is not just crime. Brazil's rail, road and airport facilities require daunting investment. The vast gap between rich and poor is immediately evident.