dc power supply system meaning in Chinese

直流供电制

The protection and control system in subway dc power supply systems play a key role in ensuring the safety and reliability of the sub way
摘要地铁直流供电的保护与控制系统对确保地铁的安全可靠运行起着关键作用。
The typical applications are : high capability dc power supplying system , dc motor controlling and ac varies frequency speed controlling systems in area of metallurgy and chemistry . they are the important basic devices for machine - electrcal unification
适用于冶金,化工行业的大容量直流电源装置以及大功率直流电机调速,交流变频调速等装置,是机电一体化的重要基础器件