传染病动力学模型的分析与研究是当今的热点问题之一，本文构造了两类具有垂直传染的SIRS传染病模型。
It becomes one of the hot issues to analyse and study the infectious disease dynamic model. Two kinds of SIRS infectious disease models with vertical infection were constructed in the article.
有关商标产品平行进口问题是当今世界知识产权领域和国际贸易领域的热点问题之一。
Now days, parallel import of trademark goods is one of the hot issues both in the fields of intellectual property rights and the international trade.
作为当今医学影像技术研究中的热点问题之一，多模态医学影像融合技术的研究及其研究成果，对认知科学的研究和临床治疗有着重要的意义。
Multi-Modality fusion is one of the hottest discussed issues in the current research of medical image processing and it has a deep impact on the cognitive science and clinical treatment.
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