... optical character scanner 光符扫描器 optical character system 光符系统 optical coating 光学涂层，光学涂 ...
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光学字符识别系统 optical character recognition system ; Optical Character Recognition
光字符识别系统 [计] optical character recognition system
光符号识别系统 optical character recognition system
多语光学字符识别系统 multilingual OCR system
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