成本估算主要有三种方法：专家判定法、类比法、参数模型法。
There are three main methods of cost estimation: expert method, analog method and parameters model method.
首先用参数模型来描述雷达探测信号，然后用最大似然(ml)法对模型参数进行估计。
Using parameter model to describe the radar signals reflective from targets and then the model parameters are estimated by means of ML method.
针对峰值法中测量路径规划问题，提出了基于参数模型学习的神经网络预测器。
Aiming at measuring path planning by using peak value, neural network predictor based on parameter model is presented.
本文基于传热单元法，建立了冷凝器的稳态分布参数模型。
Based on the, a steady state distributed parameters model was put forward in the numerical simulation of refrigerant circuitry in condensers in this paper.
在热田开发早期，较简单的评价方法是有用的如：热储计算法、衰减曲线分析法或集中参数模型等。
During the early stages of field development, simpler methods of assessment such as stored heat calculation decline curve analysis or lumped parameter models are useful.
传统的故障分析法多采用集中参数模型，无法反映真实线路的分布参数特性。
Traditional fault analysis methods for transmission line mostly adopt lumped parameter model, so the distributed parameter characteristic of real transmission line can't be reflected at all.
传统的故障分析法多采用集中参数模型，无法反映真实线路的分布参数特性。
Traditional fault analysis methods for transmission line mostly adopt lumped parameter model, so the distributed parameter characteristic of real transmission line can't be reflected at all.
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