The paper main states the definition and characteristic of school, analyses the circumstances about archivistics.
文章论述了学派的基本概念和特征,介绍了中国档案学派的建设基本情况。
Road compaction machinery is one of main machinery in road construction, the paper main discusses the situation and technical development of the machinery.
道路压实机械是筑路工程中主要机械之一,本文主要阐述此类机械的现状及技术发展趋势。
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