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China standard time—Part 1General principle
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Selected format:China standard time—Part 2Metadata
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Selected format:China standard time—Part 3Bulletin
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Selected format:Technical requirements and test methods of BeiDou airborne equipment for aviation supplemental navigation
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Code for technical upgrading of EAF process and equipment
Execute Date: october 2025
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Determination of melatonin in health foods
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Selected format:Interface specification for signal in space of Beidou navigation satellite system precise point positioning service
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Revert materials for cast superalloy
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Revert materials for wrought superalloy
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Revert materials for powder metallurgy superalloy
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