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档案去酸技术
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档案去酸技术
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管理学
档案保护技术
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archival deacidification technology
档案去酸技术
通过一定的技术方法,去除纸张中的氢离子,使纸张呈弱碱性或中性,降低纸张老化和受损的可能性,达到延长档案寿命、保护档案的目的。
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symmetric difference of graphs
symmetric difference of sets
symmetric differential form
symmetric distance function
symmetric distribution
symmetric distribution function
symmetric domain
symmetric element
symmetric encryption technique
symmetric endomorphism
symmetric entourage
symmetric equation
symmetric Euler's top
symmetric event
symmetric expression
symmetric extension
symmetric field
symmetric figure
symmetric fission
symmetric Fock space
symmetric form
symmetric function
symmetric functional
symmetric function algebra
symmetric functions
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