State system of ensuring the unity of measurements. Standard time and frequency signals radiated by specialized radio stations of the state time service. Main parameters
Optics and photonics. Peripheral devices and laser equipment systems for realization of technological processes of surface heat treatment, cladding and alloying. Classification and main technical characteristics
Conformity assessment system for the use of nuclear energy. Ultrasonic examination of welded joints with use of phased arrays technology. The procedure
€10
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