GB - Chinese national standards

Terminology of semiconductor materials

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General rule of chemical analysis for hydrogen,oxygen,nitrogen,carbon and sulfur in metallic materials

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Electro-optical distance metersEDM Instruments

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Revision specifications for the national fundamental scale topographic maps

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Sample method of carbon material

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Test method for fiber type content of hair fibers

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Test method for the yield of greasy wool and raw cashmere—Oil pressure method

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Down garments

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Polymeric materialscellular flexible--Accelerated ageing tests

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Fiber optic modulators--Part 2:Sectional specification--Waveguide electrooptic modulators

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