机构：一级和二级创伤中心。

Setting: Level I and Level II trauma centers.

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除超晶格的主衍射峰外，还观察到一级和二级卫星峰。

The first and second order satellite peaks around the main reflection appear in the superlattice rocking curve.

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再其次，通过设计一级和二级功率分配器实现了天线的馈电网络；

Moreover, feeding network of array antennas is designed and realized by the primary and secondary power splitter.

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Then there's a formula that dictates how much Tier I capital and how much Tier II capital they have to hold.

还有一个公式可以计算出,他们必须持有,多少一级资本和多少二级资本

耶鲁公开课 - 金融市场课程节选

Actually there are two discount rates; there's primary and secondary.

事实上，这里有两个贴现率；,一级贴现率和二级贴现率。

耶鲁公开课 - 金融市场课程节选

They have a formula that defines how much Tier I and Tier II capital a bank has to hold and the amount depends on the risk class of their investments.

有一个公式可以计算出,一个银行到底需要持有多少一级和二级资本,其数量取决于他们投资项目的风险等级

耶鲁公开课 - 金融市场课程节选