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Low-voltage surge protective devices. Part 31. Requirements and test methods for SPDs for photovoltaic installations
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State system for ensuring the uniformity of measurements. Methods for zeta-potential determination. Part 2. Optical methods
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Steel butt welded flanges of vessels and apparatus for gasket of octangular section. Design and dimensions
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Road vehicles with electric propulsion system. Safety requirements for damaged lithium-ion high-voltage batteries handling
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Agriculture and forestry tractors. Terms and definitions of types
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