
OPTICS AND PHOTONICS - ENVIRONMENTAL REQUIREMENTS - TEST REQUIREMENTS FOR TELESCOPIC SYSTEMS (ISO 20711:2017)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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OPTICS AND PHOTONICS - ENVIRONMENTAL REQUIREMENTS - TEST REQUIREMENTS FOR TELESCOPIC SYSTEMS (ISO 20711:2017)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频