The Study on the Effect of Altitude on the Corona Current and ion Current Density Electric Fielde Intesity at Ground in HVDC Power Transmission Line是什么意思_The Study on the Effect of Altitude on the Corona Current and ion Current Density Electric Fielde Intesity at Ground in HVDC Power Transmission Line在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句