State system of ensuring the uniformity of measurements. Standard frequency and time signals radiated by specialized radio stations of the State service of time, frequency and the Earth rotation parameters determination. Time code
Electrical apparatus for use in the presence of combustible dust. Part 2. Test methods. Section 3. Method for determining minimum ignition energy of dust/air mixtures
Ammunition and special chemistry industry. Arrangement of hazardous production facilities. Safe separation between explosive buildings. Design calculation procedure
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