来自内华达州大学的一组研究人员在近期建立了黄金矿床如何形成的模型，而他们的研究被发布在自然地球科学杂志网上。
A team of researchers from the University of Nevada recently developed a model for how the gold deposits formed. Their research was published online in the journal Nature Geoscience.
分析了旅客列车开行比例与列车运行质量要求的关系，建立了黄金时段旅客列车的合理开行数量的计算模型。
Based on analyzing the relation between proportion of passenger train and quality of train running, the calculation model of rational amount of passenger train running in golden time is set up.
本文提出的四资产理论模型对中央银行黄金业务的政策效果进行了分析，其结果支持以上的观点。
In this article, we present a four-assets model to analyze the policy effect of Central bank's gold market operation, the Conclusion backs up our viewpoint.
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