通电流；导电to connect to electricity; to conduct electricity

通电报to send an open telegram detailing one's political views

• 通电各省

  send an open telegram airing one's political views to all provinces

公开发表政治主张的电报open telegram detailing one's political views

• 发出通电

  send an open telegram detailing one's political views

• 收到通电

  receive an open telegram detailing someone's political views