1·Can you tell a green field from a cold steel rail?
你可以从冰冷的钢轨中区分绿色田地吗？
2·Can you tell a green field from a cold steel rail? A smile from a veil? Do you think you can tell?
你能区别绿色的田野和冰冷的钢轨吗？微笑和面纱吗？你认为你能区别吗？
3·The control system is convenient, and of high reliability and precision. Its applying in production highly improved the welding quality of the steel rail.
该控制系统经在实际生产中应用表明：气体流量控制及混合比控制方便、可靠、精度高，大大提高和稳定了钢轨的焊接质量。
4·Then the transform merit of the hold type railroad steel rail borer machine mainly embodiment lowered the Labour intensity of blacksmith, raised a working efficiency.
便携式铁路钢轨钻孔机的加工优点主要体现在降低了铁工的劳动强度，提高了工作效率。
5·This combined the camera calibration with the border and special point detection technology, and implemented a kind of steel rail profile abrasion measurement system.
本文还将相机标定、边缘与特征点检测技术、图像匹配技术结合起来，实现了钢轨剖面磨耗的钢轨磨耗测量系统。