91.140.40 Gas. Including gas meters in buildings / Системы газоснабжения, 27.060.20 Gas fuel burners / Газовые горелки
Ключевые слова:
Test pressure, Fuels, Gas-powered devices, Pressure, Classification systems, Testing conditions, 1st family gases, Calorific value, Control samples, 2nd family gases, Gaseous fuels, 3rd family gases