Electrical components database compilation of national standards(Chinese Edition)

Paperback. Pub October 2009 440 Chinese in Standards Press of China is widely used in industrial fields as IT increasingly complex electrical systems and equipment. function more and more perfect. People are asking more and more simple. easy operation and maintenance. the correct by reading electrical technology file to master the operation and maintenance methods. This expression requires electrical information more global concept. the complexity of the system as a whole. each unit. or function. or position as part of the system. the corresponding hierarchical layers and to clear symbol code. in order to facilitate fast retrieval queries. It can be said that the development of electrical technology. new documentation requirements. The International Electrotechnical Commission (IEC) has also issued a series of relevant international standard...