新型合金能够将热能直接转换成电能，本文对此种转换的相关理论进行了介绍，并对该合金的应用前景进行了探讨。
其次，提出港口腹地划分的相关理论并结合港口群腹地划分现状进行分析，指出目前港口腹地划分存在的问题和研究的必要性。
Secondly, relevant theories of port hinterland division have been put forward, and problems of the current status and the necessity of the research have been pointed out.
依据认知心理学的有关理论，顺应短时记忆的特点，并运用与此相关的教学策略，可以有效提高课堂信息加工的效率。
According to the theory of cognition psychology and the characteristics of short-time memory, we can use some teaching tactics to improve the efficiency of classroom information process.
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