The paper advances a new basic category, that is, service interest from the Angle of interest and makes a research into it from many aspects following the clue of development of time and space.
基于利益视角，本文提出服务利益范畴，并沿着时空拓展的线索从多个方面对该范畴进行了研究。
The author makes the research on the steel wire rope structural stretch theory and pre-pull theory from the following aspects.
作者从以下几个方面对钢丝绳结构伸长和预张拉理论进行了研究。
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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