最优的价格是一个函数，受产品创造的价值和企业在生态系统中的杠杆作用共同决定(译者注：其实就是竞争关系)。
The optimal price to charge is a function of the value the product creates and the leverage the business has within the ecosystem.
计算基本SV模型和杠杆效应SV模型的联合特征函数，借助经验特征函数方法估计这两个SV模型。
The characteristic functions of basic SV model and SV model with leverage effect are derived, an estimation (method) of SV models via empirical characteristic function is discussed in this paper.
系统的控制信号输入方式借鉴电液比例阀方案，采用凸轮杠杆机构，从而利用了凸轮容易实现任意函数关系转换的优点。
Imitating the project of electrical and hydraulic proportional valve, a CAM mechanism is adopted to input and convert the signal of crane arm's radius changing.
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