The valve is a cold cathode type and in the cathode well are the controlgrids.
该阀是一种冷阴极和阴极以及是控制网格。
2
Terrorists or agents of hostile powers could mount attacks on companies and systems that control vital parts of an economy, including power stations, electrical grids, and communications networks.
The same industrial control systems Maiffret's team was able to commandeer also run electrical grids, pipelines, chemical plants and other infrastructure.