Phase meters , power factor mters and synchroscopes 相位表功率因数表和同步指示器
2.
Direct acting indicating analogue electrical measuring instruments and their accessories part 5 : special requirements for phase meters , power factor meters and synchroscopes 直接动作指示模拟电气测量仪器及其附件.第5部分:相位表功率因数表和同步示波器的特殊要求
3.
Direct acting indicating analogue electrical measuring instruments and their accessories . part 5 : special requirements for phase meters , power factor meters and synchroscopes 直接作用模拟指示电测量仪表及其附件第5部分:相位表功率因数表和同步指示器的特殊要求
4.
Direct acting indicating analogue electrical measuring instruments and their accessories . part 5 : special requirements for phase meters , power factor meters and synchroscopes 直接动作指示模拟电气测量仪器及其附件.第5部分:相位表功率因数表和同步指示器的特殊要求
5.
Direct acting indicating analogue electrical measuring instruments and their accessories - specification for special requirements for phase meters , power factor meters and synchroscopes 直接指示模拟电工测量仪表及其辅助设备.第5部分:相位表功率因数表和同步指示器的特殊要求规范
6.
Direct acting indicating analogue electrical measuring instruments and their accessories ; part 5 : special requirements for phase meters , power factor meters and synchroscopes iec 60051 - 5 : 1985 , edition 4 ; german version en 60051 - 5 : 1989 直接显示的模拟电器测量仪及附件.第5部分:相位表功
