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United power system and isolated power systems. Relay protection and automation. Differential phase protection of power lines at voltage 330 kV and above. Testing
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Industrial felt of line wool for electrotechnical equipment and details of it. Specifications
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Plastic single-ended handles for ganging members. Design and dimensions
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State system for ensuring the uniformity of measurements. Single-crystal silicon nanometer range relief measures. Geometrical shapes, linear size and manufacturing material requirements
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