| 释义 |
photoelectric cellBrE /ˌfəʊtəʊɪˌlektrɪk ˈsel/NAmE /ˌfoʊtoʊɪˌlektrɪk ˈsel/ (also photo·cell) nounan 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. 光电池；光电感应器；光电管 |