GB - Chinese national standards

Measurements of the photoelectric properties for X-ray tubes

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Letter symbols for gas lasers

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Power supply series for gas laser

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Optics and photonics—Environmental test methods—Part1: Definitions, extent of testing

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Optics and photonics—Environmental test methods—Part 11:Mould growth

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Optics and photonics—Environmental test methods—Part 12: Contamination

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Optical and photonics—Environmental test methods—Part 14:Dewhoarfrostice

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Optics and photonics—Environmental test methods—Part 17: Combined contamination, solar radiation

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Optics and photonics— Environmental test methods—Part 2: Cold, heat and humidity

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Optics and photonics—Environmental test methods—Part 20: Humid atmosphere containing sulfur dioxide or hydrogen sulfide

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