Ch? nh?t: Kiên Giang, Lâm ??ng, Ti?n Giang K?t qu? XSMN ???c s?p x?p m?c ??nh theo l?ch m? th??ng Principle: Readings show the helpful voltage determined by the average value of samples about a complete amount of durations of the fundamental frequency . Webpage 61 Industrial ScopeM