When a symmetrical light spot is equally incident on all the quadrants, the device generates four equal currents and the spot is said to be located on the device's electrical center.

当一束对称的光点均等地入射到所有象限，该装置会产生的四股相等的电流，而这个光点就会被认为处在该设备的电中心。

youdao

An electrical storm jangled power to the center.

WSJ: The Sun Shines on 'The Cloud'

While in Pittsburgh, the President will visit the International Brotherhood of Electrical Workers, Local Number Five Training Center.

WHITEHOUSE: Press Briefing by Press Secretary Jay Carney

According to a study conducted by Schatz Energy Research Center at Humboldt State University, electrical use per household in urban areas of Humboldt County has shot up 50 percent since 1996, while in Arcata and more rural areas, household electricity use has jumped 60 percent.

FORBES: Written by Matt Hickman