line relay是什么意思

用法例句

The results of energy saving are analysed and calculated to high voltage circuit and main transformer after installing inefficiency power compensation apparatus.

本文分析和计算了加装无功补偿装置后的高压供电线路和主变压器的节能效果。

Method of setting public transport routes;

公共交通线路布设方法研究

Research purposes: Through making analyses of the landform and geological conditions in the valley zone,the principle of route selection is decided for the purpose of providing basis for the route selection.

研究目的:通过对本段地形、地质条件的分析,确定线路方案的选线原则,从而为线路方案的选择和完善提供依据。

It will be significant in design of the tunnel route selection.

本文对指导隧道线路方案设计具有重要作用。

Research on the railway line trend in Mongolia;

蒙古国铁路线路走向方案研究

Influence of zero-sequence mutual inductance of the same pole parallel laying line on zero-sequence current protection;

同杆并架线路零序互感对零序电流保护的影响

Research on preventing icing flashover on transmission line insulators;

输电线路绝缘子冰闪防治措施的研究

Study on least approaching distances between ±800 kV DC transmission line and 1 000 kV AC transmission line in a hybrid corridor;

±800kV直流和1000kV交流线路同走廊时的最小接近距离研究

Utilization and study of transmission line protection communication channel in South Hebei electric power network;

河北南网线路保护通道的使用与研究

A study on proper determination of class of repairs for heavy haul fast railway line;

重载快速线路修程合理设置的研究

Starting with an analysis of the dynamics parameters of train running-a major factor influencing the plane technical condition of railway line,a preliminary study was conducted on the plane curve radius condition of high-speed maglev based on the characteristics of TR high-speed maglev system.

结合TR高速磁悬浮系统的特点 ,从分析影响线路平面技术条件的行车动力学参数入手 ,对高速磁悬浮系统线路平曲线半径技术条件进行初步研究 ,提出TR系统线路最小平曲线半径的建议值 ,旨在为分析TR高速磁悬浮系统线路技术条件提供科学参考。