In the calculation of the model parameter of shifting rate of rail transportation, I write standard procedure of MNL model in common use in VB language.
在对轨道交通转移率模型参数的计算中，用VB语言编写了新的MNL模型标定程序。
2
The feeding speed of shifting unit of welding machine is one of the most important factors of rail continuous flash welding quality.
影响钢轨闪光焊接头焊接质量的因素很多，其中焊机动力柱的送进速度就是重要因素之一。
3
Flash can be continual and steady, and then, the good welding joints could be obtained by properly controlling feeding speed of shifting unit of rail continuous flash welding.