1·According to the relative data of typical sections, the relationship between traffic accidents and road vertical section parameters was studied based on statistics and regression methods.
结合典型长大下坡路段的交通事故数据，运用数理统计与回归分析方法，研究了交通事故与道路纵断面参数之间的关系。
2·The analysis of forces exerted on material on vertical section shows that there should be an Angle between the vibrated force direction and crosswise of separation bed.
物料在纵断面上的受力分析表明：分选机激振力方向应与分选床横向有一定角度。
3·The plane and vertical section design parameters of railway line directly affect the line grade and the running safety and comfortableness.
线路平纵断面设计参数直接影响到线路等级以及行车的安全性和舒适性。