Explosionproof electrical apparatus. Part 12. Classification of mixtures of gases or vapours with air according to their maximum experimental safe gaps and minimum igniting currents
Materials used as cigarette papers, filter plug wrap and filter joining paper, including materials having a discrete or oriented permeable zone and materials with bands of differing permeability. Determination of air permeability
Intelligent transport systems. Dispatch control systems for urban ground passenger transport. Requirements for the list and content of the reporting data of transport enterprises operating under a brutto-contract
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