抛物面的 meaning in Chinese

paraboloidal

In this paper , two properties of paraboloid in the textbook analytic geometry is generalized
摘要将《解析几何》教材中抛物面的两个性质定理推广到更一般的情形。
Then , we establish the finite element analysis models of the antenna in different structure layout , and obtain the corresponding frequencies and model shapes . finally , according to the importance of each object , we set up the model of multiple objects that aims to maximize the first natural frequency and minimize the mass . combining orthogonal experiment and variant weighting coefficient method , we formed an effective multiple objects optimized algorithm basing on the neural network and genetic algorithm
本文首先详细的叙述了天线结构的各组成单元，阐明了天线反射抛物面的形成原理；然后在ansys软件环境中建立了不同结构布局下天线的有限元分析模型，分析计算了各种情况下天线的的固有频率与振型；最后依据天线各指标的重要性，建立了以一阶固有频率最大、质量最小为目标的天线结构多目标优化设计模型，并基于神经网络和遗传算法，结合正交实验和变加权系数技术，形成了一种有效的多目标优化算法，在matlab平台下实现了天线的结构多目标优化设计计算程序，求得了天线的最佳结构参数。