
QUANTITIES AND UNITS - PART 2: MATHEMATICAL SIGNS AND SYMBOLS TO BE USED IN THE NATURAL SCIENCES AND TECHNOLOGY (ISO 80000-2:2009)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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QUANTITIES AND UNITS - PART 2: MATHEMATICAL SIGNS AND SYMBOLS TO BE USED IN THE NATURAL SCIENCES AND TECHNOLOGY (ISO 80000-2:2009)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频