个案研究与系统归纳结合。

To combine individual research with systematic research.

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第二章对LPG运输、装卸进行了系统归纳，为船舶安全运输提供了必要的技术知识。

The second chapter makes a systemic conclusion in the shipping and handling of LPG, which provides necessary shipping techniques to transmit LPG in the security conditions.

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系统归纳、总结、提炼基于不同标准的创业类型分类，并相应对每种创业类型进行了分析。

In this paper, we conclude and abstract the classification of entrepreneurship in different view, and analysis of every type of entrepreneurship is given.

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