GB/Z 18039.5-2003 电磁兼容 环境 公用供电系统低频传导骚扰及信号传输的电磁环境 Electromagnetic compatibility--Environment--Electromagnetic environment for low-frequency conducted distrubances and signalling in public power supply systems
Electromagnetic compatibility--Environment--Electromagnetic environment for low-frequency conducted distrubances and signalling in public power supply systems