亚洲91视频,国产91网,久久久久久久久久久久久久久国产,亚洲一区二区三区日本久久九,亚洲日本久久,国产精品久久久99,亚洲欧美一区二

500kV (Expo 2010) transformer substation in Jing'an of Shanghai

Updated: 2014-03-20

The first completely underground transformer substation in China—500kV (Expo 2010) transformer substation in Jing'an of Shanghai.

500kV (Expo 2010) transformer substation in Jing'an of Shanghai