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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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manned lunar exploration
manned lunar module
manned lunar orbital station
manned lunar probe
Manned lunar rover
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manned Mars exploration
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Mannerist Architecture
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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:2026/9/27 1:35:34