extra high voltage meaning in English

超高电压
极高压
特高压

The study of numerical method in extra high voltage dc system
超高压直流系统数值计算新方法
Characteristic of extra high voltage transmission
超高压输电的特点
Technology development and application of high and extra high voltage cable
超高压交联电缆的发展及应用
Implementation of power transmission gis for shanghai extra high voltage company
上海超高压工区输电地理信息系统的实现
Impact and prevention measures to electromagnetic field of extra high voltage transmission lines
超高压输电线路电磁场影响及防治措施

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