Transparent film projector is used to demonstrate interference, polarization and other wave optical phenomena and laws on large screen in big lecture halls.

本文介绍利用投影仪和透明胶片在大教室前的屏幕上动态演示干涉、偏振等波动光学现象及其规律的一些方法。

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The chief equipment of electrified education includes slide projector, overhead projector, film projector, tape recorder, television set, TV camera and so on.

其主要设备包括用于幻灯、投影、电影、录音、电视和摄像等方面的机器。

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She threaded the film into a projector.

她把电影胶片装入放映机。

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Each print must be delivered in its metal canister by courier to the cinema, where the reels are spliced together, spooled on a platter and fed through the sprockets of a film projector.

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And an extremely wealthy film buff might buy such a projector from Vision Experience, which sells them packaged with enormous, inflatable screens.

FORBES: Magazine Article

Built by Texas Instruments, the projector operated without a single scrap of film.

FORBES: Pixel Perfect