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Chinese Standard: GB/T 17992-2008

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Chinese Standard: GB/T 17991-2009

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Chinese Standard: GB/T 17989.4-2020

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Chinese Standard: GB/T 17989.3-2020

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Chinese Standard: GB/T 17989.2-2020

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Chinese Standard: GB/T 17989.1-2020

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Chinese Standard: GB/T 17987-2000

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Chinese Standard: GB/T 17986.2-2000

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Chinese Standard: GB/T 17986.1-2000

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Chinese Standard: GB/T 17985.3-2000

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Chinese Standard: GB/T 17985.2-2000

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Chinese Standard: GB/T 17985.1-2000

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Chinese Standard: GB/T 17984-2010

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Chinese Standard: GB/T 17983-2000

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Chinese Standard: GB/T 17982-2018

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Chinese Standard: GB/T 17981-2007

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Chinese Standard: GB/T 17980.99-2004

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Chinese Standard: GB/T 17980.98-2004

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Chinese Standard: GB/T 17980.97-2004

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Chinese Standard: GB/T 17980.96-2004

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Chinese Standard: GB/T 17980.95-2004

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Chinese Standard: GB/T 17980.94-2004

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Chinese Standard: GB/T 17980.93-2004

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Chinese Standard: GB/T 17980.92-2004

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Chinese Standard: GB/T 17980.91-2004

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Chinese Standard: GB/T 17980.90-2004

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Chinese Standard: GB/T 17980.9-2000

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Chinese Standard: GB/T 17980.89-2004

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Chinese Standard: GB/T 17980.88-2004

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Chinese Standard: GB/T 17980.87-2004

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Chinese Standard: GB/T 17980.86-2004

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Chinese Standard: GB/T 17980.85-2004

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Chinese Standard: GB/T 17980.84-2004

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Chinese Standard: GB/T 17980.83-2004

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Chinese Standard: GB/T 17980.82-2004

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Chinese Standard: GB/T 17980.81-2004

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Chinese Standard: GB/T 17980.80-2004

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Chinese Standard: GB/T 17980.8-2000

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Chinese Standard: GB/T 17980.79-2004

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Chinese Standard: GB/T 17980.78-2004

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Chinese Standard: GB/T 17980.77-2004

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Chinese Standard: GB/T 17980.76-2004

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Chinese Standard: GB/T 17980.75-2004

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Chinese Standard: GB/T 17980.74-2004

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Chinese Standard: GB/T 17980.73-2004

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Chinese Standard: GB/T 17980.72-2004

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Chinese Standard: GB/T 17980.71-2004

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Chinese Standard: GB/T 17980.70-2004

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Chinese Standard: GB/T 17980.7-2000

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Chinese Standard: GB/T 17980.69-2004

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Chinese Standard: GB/T 17980.68-2004

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Chinese Standard: GB/T 17980.67-2004

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Chinese Standard: GB/T 17980.66-2004

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