A digital optical projector is used as the optical source, and the electrical grating is generated by computer.

实验系统光源采用数字光学投影仪，并用计算机生成电子光栅。

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Optical projector, tension tester, pressure tester and torsiometer are the testing instruments. Testing results can be typed automatically.

检测设备有光学投影仪、拉、压、扭力测试仪，检测结果由测试仪自动打印。

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The projector is based on modifications of the optical platform of an off-the-shelf high quality brand product.

这种投影机建立在对一种现行高端品牌产品的光学平台进行改进的基础之上。

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Reeve's Superman soared thanks to a combination of traditional wirework, optical processing and the synchronising of zoom lenses in camera and projector.

BBC: By James Christie

But, starting in the nineteen-thirties, music soundtracks were added to silents, and the films needed to move through the projector at twenty-four frames a second, so that the optical sound reader could handle the music track.

NEWYORKER: The Artists