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.
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。
In my thesis, author firstly sketch the current research on micropayment status at homeland and abroad, introduce meaning of paper and some theory support to paper.
在本论文中，我们首先给出了小额支付国内外的研究现状和论文本身的意义，以及相关的理论支持。
Objective To introduce the current research status, value and development future of Arg-Gly-Asp (RGD) peptides in diagnosis and treatment of neoplasms.
目的介绍精氨酸甘氨酸天冬氨酸(RGD)肽在肿瘤诊治领域的研究现状、价值及发展前景。
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