GOST 25951-83

Surface acoustic wave devices. Types, main parameters and methods of measurement

Organic dyes. Sulphur black paste. Specifications

Electroacoustics. Simulators of human head and ear. Part 5. 2 cm3 coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts

State system for ensuring the uniformity of measurements. Requirements established for the quantity of prepackaged goods in packages of any kind during their manufacturing, packaging, selling or importing

Design, calculation and strength testing. Methods of mechanical testing of metals. Methods for stress relaxation testing

Bee colonies