optical clean
光学清洁
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Then, they move on to clean rooms, where the Dragon sensor and new optical low-pass filter are installed.
ENGADGET: After hours at NAB: A closer look at Red's Dragon upgrade operation (video)
Holography and optical correlation are both inherently analogue processes that can degrade the clean 1s and 0s required in a digital system.
ECONOMIST: Optical recognition
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