内容提示: BRITISH STANDARDBS 6840-1:1987IEC 268-1:1985(including Amendment Nos. 1 (March 1988) and 2 (June 1988) to IEC 268-1:1986) Sound system equipment —Part 1: Methods for specifying and measuring general characteristics used for equipment performance —[IEC title: Sound system ...
BS 6840-1:1987(1999)*IEC 268-1:1985音响系统设备 第1部分:用于指定和测量设备性能一般特性的方法 [IEC 标题:音响系统设备 第1部分:概述] Sound system equipment — Part 1 : Methods for specifying and measuring general characteristics used for equipment performance — [ IEC title : Sound system ...