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chào Anh Picvendor,
Nhờ anh giúp 2 tài liệu này:
1) A Power Factor Standard Using Digital Waveform Generation
Digital Object Identifier: 10.1109/TPAS.1981.316857
Date of Current Version: 26 February 2007
2) Recommended Practices for Safety in High-Voltage and High-Power Testing
Digital Object Identifier: 10.1109/IEEESTD.1983.81973
Cám ơn Anh
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