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书目计量学
采用数学、统计学方法,揭示和研究各类文献的分布结构、数量关系、变化规律和定量管理,进而探讨学科发展特征、规律与趋势的科学。是数学、统计学、目录学等多学科交叉发展的产物。又称文献计量学。
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rare earth alloy
rare earth and transition metal doped solid state laser
rare-earth and transition metal doped solid-state laser
rare-earth-based AB5-type hydrogen storage alloy
rare earth bromide
rare earth carbonate
rare earth catalytic material
rare earth centrifugal extractio separation and purification
rare-earth chelate
rare earth chloride
rare earth chloride lithium thermal reduction
rare earth cluster compound
rare earth complexes materials
rare earth compounds
rare-earth-doped glass
rare earth element
rare-earth element
rare earth element geochemistry
rare earth extraction chromatography separation and purification
rare earth fluoride
rare earth fluoride calcium thermal reduction
rare earth fuzzy extraction
rare earth hard magnetic materials
rare earth helate
rare earth hydroxide
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
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