透射式投影器 性能特性测定方法
Overhead projectors - Methods for measuring performance characteristics
2008-07-02
GOST R ISO 9767-1993
Фотография. Графопроекторы. Методы измерения и форма представления эксплуатационных характеристик
摄影 架空投影机测量和报告性能特征的方法
BS 4120-1968
Methods for the measurement of performance of still projectors
静态放映机性能的测量方法
1968-09-26
BS 5817-20-1989
Specification for audiovisual, video and television equipment and systems-Methods of measuring and reporting the performance of 16 mm sound film projectors
视听、视频和电视设备及系统规范 16mm有声电影放映机性能的测量和报告方法