All four HVDC links that have been built to date were delivered by ABB.
All four HVDC links that have been built to date were delivered by ABB.
迄今为止，全部建成的四条HVDC传输线全部由ABB交付。
All four HVDC links that have been built to date were delivered by ABB.
迄今为止，全部建成的四条HVDC传输线全部由ABB交付。