KS B ISO 13347-2:2020 Industrial fans — Determination of fan sound power levels under standardized laboratory conditions —Part 2: Reverberant room method
2020KS B ISO 13347-2:2020 Industrial fans — Determination of fan sound power levels under standardized laboratory conditions —Part 2: Reverberant room method
2005KS B ISO 13347-2:2005 Industrial fans-Determination of fan sound power levels under standardized laboratory conditions-Part 2:Reverberant room method