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Plastics piping systems. Plastics components of piping systems. Determination of dimensions
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Lightrailtransport. Braking system. Requirements and test methods
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Blacksmith`s hand and hammer tools. Flat cross-longitudinal cutting pliers. Design and dimensions
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State system for ensuring the uniformity of measurements. D.C. electrical energy meters. Methods and means of calibration
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United power system and isolated power systems. Relay protection and automation. Distance and overcurrent protection of power lines and utilities 110–220 kV. Functional requirements
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