Electrical Sourcebook- Electrical Manual (1768) The main content of this manual include: electrical symbols and common units of measurement, electrical knowledge map, basic knowledge of electrical, electrical instruments and tools commonly used, electrical measurement, electrical materials, transformers, motors, electrical control, high voltage distribution, low voltage power distribution, electrical lighting, security, electricity, basic knowledge of electronics and other content.

电工资料大全--电工手册.doc

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