cylindrical spiral spring meaning in English

圆柱形螺旋簧

There are many kinds of spring in spring suspension devices , but the most used spring in rolling - stock is cylindrical spiral spring
铁路车辆用弹簧的种类虽多，但最常用的还是簧料截面为圆形的螺旋弹簧。
China railway department have made out related technical standard and document to analysis and design it though it is touch and hard job to design the cylindrical spiral spring by manual . so it is urgent necessary to develop a special cad software . in this paper , the design thought and flowchart of special railway spring suspension cad software has been deeply described and some resource codes and instances have been inserted
对于铁路车辆专用螺旋圆弹簧的设计，铁道部制定了详细的技术标准和规范文件，但是采用手工设计与验算显得十分繁琐，计算量大，因此开发了铁路车辆典型零件“圆柱螺旋压缩弹簧”专用cad软件，对于合理设计其结构尺寸，选择适宜的结构参数，提高设计效率和设计质量具有十分重要的现实意义论文叙述了所开发的铁路车辆典型零件“圆柱螺旋压缩弹簧”专用cad软件的主要设计思想和设计流程，并给出一些源代码和例子。