GB - Chinese national standards

Gold mining industry terminology

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Test method of gold and silver nanoparticle materials biological effect by transmission electron microscope

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Commercial coal quality—Civil bulk coal

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Commercial coal quality—Civil briquette

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Test method for flexural property of thin and ultrathin glass—Three-point bending method

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Microbeam analysis—Electron backscatter diffraction—Phase analysis method of metal and alloy

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Urban drainage and sewage treatment service

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Surface chemical analysis—Proposed procedure for certifying the retained areic dose in a working reference material produced by ion implantation

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Determination of sulfur in refractory products

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Chemical analysis methods for determination of Fe2+ and Fe3+ in refractory products by the spectral photometric method with 1,10-phenanthroline

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