An analytical function for describing hardness distribution in round section of quenched steel, known as U-curve, has been established.
建立了描述淬火钢圆形截面硬度分布曲线——U曲线的解析函数表达式。
2
The paper introduces a U-curve for global E-procurement strategy that defines the principle in establishing global purchasing strategy: function decomposition and separate management.
提出了全球电子采购战略U型曲线的概念，论述了全球电子化采购的战略原则：采购职能分解和区别管理。
3
Well, according to a story on the Telegraph, the average person's happiness curve looks U-shaped.