photoelectric cell

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++

Related topics: Electrical, Electricity

ˌphotoelectric ˈcell noun [countable]  1. TEEan electronic instrument that changes light into electricity 光电池2. TEESCCan electronic instrument that uses light to start an electrical effect, often used in burglar alarms 光电感应器〔把光信号转换成电信号，常用于防盗警报器〕

ˌphotoelectric ˈcell nounChineseSyllable  

photoelectric cell
ˌphotoelectric ˈcell noun [countable]
1. an electronic instrument that changes light into electricity
2. an electronic instrument that uses light to start an electrical effect, often used in burglar alarms

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