photoelectric cell

US [ˌfoʊtoʊɪˌlektrɪk ˈsel]
UK [ˌfəʊtəʊɪˌlektrɪk ˈsel]
  • n.光电管;光电池;光电感应器
  • Web光电元件;光电片;光电子眼
Plural Form:photoelectric cells  
photoelectric cell
n.
1.
光电池;光电感应器;光电管an electric device that uses a stream of light. When the stream is broken it shows that sb/sth is present, and can be used to control alarms, machinery, etc.