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| English | Russian |
| optical character recognition | OCR, распознавание текста (A method of translating images of printed text into machine-encoded text) |
| optical character recognition line | OCR-строка (A line of characters that is read by special character recognition equipment and translated into computer text) |
| optical coherence tomography | оптическая когерентная томография (An imaging method used to obtain high resolution cross-sectional images of the retina) |
| optical zoom | визуальное масштабирование (The adjustment of the magnification of a content area or an object (such as a photograph). Developers can specify CSS (using just one line) to enable an element to be zoomed by the user via touch, mouse, and keyboard. This is visually zooming in on an image or document, etc.. When you zoom, the thing you're looking at gets bigger, maintaining proportionality) |
| zero power optical disk drive | с нулевым потреблением питания при простое (Pertaining to the ability to reduce the power consumption of optical disk drives in the operating system to zero to save energy when the drives are not in use) |