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文献分类标引
利用某种文献分类法及其标引规则,依据文献内容主题及其部分外部特征,赋予文献分类号的过程。又称文献分类。
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meandering river
meandering river channel
Meandering Stream Garden
mean derivative
meander line
mean deviation
mean diameter
mean difference
mean distribution
mean diurnal motion
mean earth ellipsoid
mean ecliptic sun
mean electron concentration
mean element
mean entropy
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mean epoch
mean equator
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mean-ergodic theorem
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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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更新时间:2026/8/8 23:26:12