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藏品定级
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grading of collection
藏品定级
根据藏品的历史、科学、艺术价值,按照《中华人民共和国文物保护法》和《中华人民共和国文物保护法实施细则》的有关规定,综合考虑藏品的存世量、分布、现状、功能、质地等诸多因素,为文物藏品划分不同等级的工作。
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rare earth oxidation-reduction separation and purification
rare earth oxide
rare earth oxides
rare earth oxides lanthanum thermal reduction
rare earth perchlorate
rare-earth permanent magnet
rare earth permanent magnetic material
rare earth permanent magnetic materials
rare earth permanent magnetic material with low temperature coefficient
rare earth phosphate
rare earth pyrometallurgy
rare-earths-cobalt perma-nent magnetic material
rare earth-sensitized luminescence materials
rare earth solvent extraction separation and purification
rare earth sulfate
rare earth synergistic extraction
rare element
rare event
rarefaction
rarefaction analysis
rarefaction impulse deconvolution
rarefaction wave
rarefied gas dynamics
rarefied gas effects
rarefied plasma
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