给出了典型元件的三相模型，特别是给出了铁道牵引变电所的三相模型。
Three phase models of typical elements , especially the model of railway drawing substation , are provided .
牵引整流柜均流试验正是为了检测其各个桥臂并联支路整流元件的电流分配情况而设立的检验项目。
The uniform current test of the rectifier for traction power is the test subject that aimed at inspecting the current distribution of the rectifying elements in every parallel branch line bridge.
可将这些元件安装在牵引车上或固定在地面上进行操作。
These power units can be mounted on the tractor or placed on the ground in proximity to fixed operations.
以地铁车辆用DC750V牵引变频器为例，采用IGBT作为主要开关元件设计了逆变器主电路及控制系统，并利用MATLAB/SIMULINK进行了仿真。
It is designed that the main circuit and control system using the IGBT as its switch element based on the DC750V traction transducer of metro vehicles. The system is also simulated by MATLAB/SIMULINK.
收卷采用力矩电机恒力矩控制，印刷压辊、出料牵引压辊采用气动元件控制。
Reeling adopts constant torque control of the torque motor and the printing pressure roller and the discharging traction pressure roller adopt pneumatic component control.
脱扣装置包括牵引杆、热元件、双金属元件、磁系统、锁扣及跳扣。
A tripping device comprises a traction rod, a thermoelement, a bimetallic element, a magnetic system, a lock catch, and a jump pin.
介绍了一种以液压油缸为执行元件的新型无极绳牵引车的自动张紧装置，并对其系统的结构和工作原理进行了分析。
A new-type automatic take-up of the endless rope towing vehicle with the hydraulic cylinder as actuator was introduced, and the configuration and operational principle of the system were analysed.
阐述了电力线路张力放线自制牵引机设计中与进口设备完全不同的一种新型液压驱动设计方案，该方案使电力线路张力放线液压系统元件国产化得以实现。
The design of a new type of hydraulic system was introduced, which was totally different from the imports. And the localization of this system has been realized.
阐述了电力线路张力放线自制牵引机设计中与进口设备完全不同的一种新型液压驱动设计方案，该方案使电力线路张力放线液压系统元件国产化得以实现。
The design of a new type of hydraulic system was introduced, which was totally different from the imports. And the localization of this system has been realized.
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