
QUANTITIES AND UNITS - PART 2: MATHEMATICAL SIGNS AND SYMBOLS TO BE USED IN THE NATURAL SCIENCES AND TECHNOLOGY (ISO 80000-2:2009)
出版:Comite Europeen de Normalisation

專家解讀視頻
QUANTITIES AND UNITS - PART 2: MATHEMATICAL SIGNS AND SYMBOLS TO BE USED IN THE NATURAL SCIENCES AND TECHNOLOGY (ISO 80000-2:2009)
出版:Comite Europeen de Normalisation
專家解讀視頻