标准号:ANSI IT7.225-1991(R1996)
中文标准名称:视听系统(摄影)。高架投影机。测量和使用性能
英文标准名称:Audiovisual Systems (Photography) - Overhead Projectors - Methods for Measuring and Reporting Performance Characteristics ISO 9767-1990 R1995; Revision and Redesignation of ANSI IT7.204-1991