huàn​dēng​jī

overhead projector

幻灯机 (幻燈機) huàn​dēng​jī
overhead projector noun
a device that projects images from transparent sheets onto a wall or screen
slide projector noun
a device used to project images from photographic slides onto a screen

Frequency

Movie subtitles
0.090 per million appears in 0% of films
Written text
0.115 per million

Sources

Definitions
CC-CEDICT