State system for ensuring the uniformity of measurements. State verification schedule for means measuring electric field intensity within the frequency range from 0,0003 to 2500 MHz
Heating boilers. Part 4. Heating boilers with forced draught burners. Special requirements for boilers with forced draught oil burners with output up to 70 kW and maximum operating pressure of 3 bar. Terminology, special requirements, test methods and marking
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