rail surface

基本解释

In this paper an investigation has been made into rail surface defects by way of metallographical test and electronic probe test.
采用金相检验和电子探针的方法，对钢轨表面缺陷进行了检验分析。
The maxim equivalent stress and shear stress occur close to the rail surface if the wheel-rail contact point approaches the rail joint.
最大等效应力和最大主剪应力的位置随接触点到轨缝距离的减小而接近轨面；
The influences of excitation mechanisms such as rail surface roughness, roller eccentricity and roller flat on the high frequency vibration were investigated.
分析了导轨表面粗糙度、导轮偏心和扁疤等激励对电梯高频振动的影响。

He knelt down and crawled from the switch rails to the frog of the crossover, sliding his hand along the running surface and the head of the rail and feeling for possible corrugations or dents, or burrs shaved off by the wheels of the locomotives.
NEWYORKER: Among Animals and Plants