GOST R 53868-2021

System of standards on information, librarianship and publishing. Information retrieval languages. Terms and definitions

State system for ensuring the uniformity of measurements. State service of standard reference data on physical constants and properties of substances and materials. Standard reference data for atomic energy service. Basic principles

Interstate system for standardization. Adoption rules and methods for international and regional standards as interstate standards

Rotating electrical machinery. Brush holders and brackets. Serrations on fixing surface. Shapes and dimensions

Civil defense. Engineering and technical equipment of civil defense protective structures. Hermetic valves. General technical requirements. Test methods

Steel wire ropes. Locked conveying wire rope with one layer of Z-wire and type TK core. Dimensions