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中国古代运河工程技术史
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中国古代运河工程技术史
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理学
中国古代运河工程技术史
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history of canal engineering technology in ancient China
中国古代运河工程技术史
中国古代人工运河工程技术的起源、发展、特点及重要技术成就的记录与总结研究。古代运河工程是中国水利史的重要组成部分,也是中国古代水利科学技术成就的重要标志。
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forestry policy
forestry policy history
forestry policy system
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