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Generator, modulator and control lamps with power dissipated by the anode, over 25 watts. Methods for monitoring the absence of intra-tube short circuits and breaks of electrodes and heater
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Direct acting indicating analogue electrical measuring instruments and their accessories. Part 1. Definitions and general requirements
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Unified system of technological documentation. General rules for drawing up of textual technological documents
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Non domestic gas-fired overhead luminous radiant heaters. Part 1. Safety requirements
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Unified system for design documentation. Types of products
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Slotted round nuts product grade a. Technical requirements
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