ISBN: 9787508317793 - 新旧电气简图标准编制示例对照图集 (1 risultati)

paperback. Condizione: New. Language:Chinese.Paperback Pages Number: 131 In recent years. the country issued a series of national interface with the IEC series of standards: 1996 ~ 2000. issued by the GBT4728.2-4728.13 for electrical diagrams use graphical symbols . replacing the 1984 to 1985 national standard electrical diagram graphic symbols; 1997 issued by the GBT6988.1-6988.3 used in electrical technology file preparation. replacing the 1986 edition GB Electrical drawings; enacted in 2002 and 2003 GBT5094.1-5094.2 .…