1. What are surrogate keys? Explain how the surrogate key pipeline works. 什么是代理键？简述代理键替换管道如何工作。
2. Surrogate model is a key element of the multidisciplinary design optimization(MDO). 代理模型是多学科设计优化的关键技术之一。
3. Adjustment for case-mix and surrogate markers of malnutrition and inflammation attenuated, but did not reverse, this relationship. 这个关系在调整病例组合和营养不良和炎症指标时减弱但没有出现逆转。
1. someone who takes the place of another person
2. a person appointed to represent or act on behalf of others adj.
1. providing or receiving nurture or parental care though not related by blood or legal ties