The paper introduces the classification of bituminous emulsion, the application in road construction and maintenance project as well as the superiority in comparison with normal hot-mix bitumen.
介绍乳化沥青的分类，它在道路建设及养护工程中的应用以及与普通热拌沥青相比的优势。
For hydropower construction projects, achieves classification and number preparation is a critical issue in sorting-out and voluming of project documents.
水电建设项目工程档案的分类方案与档号编制，是工程文件归档整理、组卷的关键问题之一。
The second part makes further exploration on the research subject from the following aspects: connotation, classification, characteristics and overview of the port construction project.
第二部分，从港口建设项目的内涵、分类、特点及我国港口建设项目的概况四个方面对本课题的研究对象进行深入探讨。
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