There exist many problems for the logarithm linear regression formulations during estimating the cost of airborne avionics system. 在估计机载航电系统费用时,对数线性回归估算关系式存在许多问题。
Enterprises carry out cost estimating everyday system in order to even strengthen cost control. This system is a creation of tradition management through costs system. 日成本核算制是企业为进一步加强成本管理而出现的一种成本管理制度,是对传统成本管理制度的一种创新。
Gives a simple method for estimating communication cost on Dawning-2000 system. 结合曙光2000-Ⅰ的特点,给出了简化的通讯量评估方法。
Using the concept of marginal generating unit and the technologies of probabilistic production simulation, an efficient method was developed for estimating probability distribution function of marginal generating cost of power system. 应用系统边际发电单元的概念,利用随机生产模拟方法,提出一种计算电力系统边际发电成本概率分布函数的有效方法。
The virtual flux is used to orientation control and instantaneous power estimating. A kind of DPC strategy without power grid voltage sensor is gotten and the cost of system construction is reduced. 其次,引入交流电机定子磁链的概念,利用虚拟磁链矢量进行定向控制和瞬时功率估算,得到一种无电网电压传感器的DPC策略。