Low-voltage switchgear and controlgear. Part 5-7. Control circuit devices and switching elements. Requirements for proximity devices with analogue output
Machines for disassembling, laying down rail-sleeper assemblies and railway switches and flat wagons specially designed for them. General technical requirements
State system for ensuring the uniformity of measurements. The state standard and all-union verification schedule for instruments measuring power of electromagnetic oscillations in waveguides within frequency range from 37,5 up to 53,57 GHz
