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Semiconductor silicon, raw materials for its production and quartz. Methods of phosphorus determination

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Wiring accessory. Ring stamped cable terminals, with open tail, attached to conductor core and insulations. Construction and sizes

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United power system and isolated power systems. Operational dispatch management. Relay protection and automation. Technical accounting and operations analysis. General requirements

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Cables, wires and cords. Methods of control of bending resistance with twisting

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Heat exchangers. Test methods for determining the power criteria of air/air and an air/exhaust gas mixture heat recovery devices

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Intelligent terminal for feeder bay of traction substations, for pole-mounted substations and for specific electric railways equipment. Technical requirements

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