catenary line meaning in English

链线

To ensure that the electrical locomotive would operate safely , it is important to inspect the overhead catenary line periodically and keep catenary system in good condition . at present , the catenary testing car is an intelligent testing equipment in electrified railway
接触网检测车是目前电气化铁路最常用的智能检测设施，其数据处理系统利用微型计算机对接触网的几何参数、电气参数进行自动化检测的重要设施。
In this paper , the fundamentals of cable forces by frequency method are introduced . the curve fitting method is utilized to get the correcting formula of cable forces and frequency through the experiment . on the other hand , a kind of catenary line cable element is introduced in this paper , owing to the inaccuracy caused by correcting struss element in fem
本文还介绍了频率法测索力的基本原理，并通过试验，利用曲线拟合法得出索力频率之间的修正关系式；其次，由于有限元计算中，索元所采用的修正杆元所带来的不精确性，对于长索其精度更难保证，因此，本文介绍了一种计算精度高、工作量小的悬链线索元。