GB 936-1989.Colour TV receiver - Colour temperature of white point-- Reference w...

国家标准2023.07.27

GB 2846-1988.Methods of measurement on radio receivers for AM broadcast transmis...

国家标准2023.07.27

GB 5874-1986.Image produced by camera aperture type won 16mm motion-picture film...

国家标准2023.07.27

GB 3659-1983.Methods of measurement of television video channel.GB 3659适用于我国黑白和彩...

国家标准2023.07.27

GB 3556-1983.Standard gray and color test chart for photography - specifications...

国家标准2023.07.27

GB 4963-1985.Normal equal-loudness contours for pure tones under free field llst...

国家标准2023.07.27

GB 12281 一1990.Requir ements for the interconnections and matching of color tele...

国家标准2023.07.27

GB 12682-1990.Test method for comparing colour. stabilities of colour photograph...

国家标准2023.07.27

GB 12683-1990.Method for determining the tensile properties of photographic fim...

国家标准2023.07.27

GB 13837-2003.Sound and television broadcast receivers and associated equipment-...

国家标准2023.07.27