Secondly, to make a vibration analysis of catenary.

第二，分析接触网的振动特性；

The upper-structure of bridge employs catenary curve non-hinge arch.

桥梁上部结构形式定为悬链线无铰拱。

Above all, oneself used the method of the catenary outside increasing.

首先，本人采用了增加外链的办法。

Whole is optimized is one of core problems that supply catenary government.

整体优化是供应链管理的核心问题之一。

Mainly introduce the strip catenary control system of the Cold Rolling Mill Plant.

主要对冷轧退火涂层机组中的带钢垂度控制系统进行了介绍。