求翻译：课题以牵引供电系统谐波电流引起的牵引变压器降容率为核心内容，系统研究其对高铁供电安全的影响，为高速铁路牵引供电系统的安全分析与工程设计提供理论指导和技术支持。是什么意思？

Subject to traction power supply system harmonic currents caused by the traction transformer derating rate of the core content of the system to study the security of electricity supply of the high-speed rail, high-speed railway traction power supply system security analysis and engineering design to

Topics to traction power supply system harmonic currents caused by yung rate decreased Traction transformer core content, and high-speed railway system to examine its impact on the security of electricity supply, for high-speed rail traction power system safety analysis and design provide theoretica

The topic tows the hauling transformer which the power supply system harmonic current causes to fall Rong Lvwei the core content, the system studies it to the high-valence iron power supply security influence, provides the theory instruction and the technical support for the high-speed railroad haul

Subject to harmonic currents in traction supply system caused by traction transformer capacity-reducing rate of core content, systems research and its impact on high-speed rail power supply safety, safety analysis and engineering design for high speed railway traction power supply system provides gu

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