- 持續(xù)工頻電壓
- power frequency discharging voltage: 工頻放電電壓
- power frequency sparkover voltage: 工頻跳火電壓(避雷器的)
- power frequency withstand voltage: 工業(yè)頻率耐壓,工頻耐壓水平
- power-frequency voltage test: 工頻試驗(yàn)
- power-frequency withstand voltage: 工頻耐壓
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