GB - Chinese national standards

Catalyst for motorcycle exhaust purification

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Yttrium-europium-gadolinium oxide

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Chemical analysis methods of rare earth contents in samarium-europium-gadolinium concentrates - Part 1: Determination of total rare earth oxide content - Gravimetry

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Chemical analysis methods of rare earth contents in samarium-europium-gadolinium concentrates - Part 2: Determination of fifteen rare earth oxide relative contents - Inductively coupled plasma emission spectrometry

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Test methods of rare earth phosphors for LED—Part1: Determination of spectrum

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Test methods of rare earth phosphors for LED—Part 2: Determination of relative brightness

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Test methods of rare earth phosphors for LED—Part 3: Determination of chromaticity coordinates

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Test methods of rare earth phosphors for LED—Part4: Determination of high temperature and high humidity property

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Test methods of rare earth yellow phosphor for white LED lamps - Part 5: Determination of pH value

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Test methods of rare earth yellow phosphor for white LED lamps - Part 6: Determination of conductivity

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