... butt weld对接焊缝 Random Radiography随机射线||照相检查 radiographic examination射线照相检查 ...
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The main contents of this paper are organized as following. (1) The concept of stochastic rays is introduced, and the theoretical foundation of the method of stochastic rays is extend and perfected.
主要内容包括:(1)介绍随机射线的概念,拓展完善随机射线方法的理论体系,并用来研究无线电波的多径传播特性。
参考来源 - 基于布朗桥的市区无线信道建模与仿真研究·2,447,543篇论文数据，部分数据来源于NoteExpress
选用了鲍威尔法和网格随机射线法，进行优化计算。
The Powell's method and the net random-ray method are chosen as optimum methods.
根据电磁波在无线信道中传播的随机特性，使用随机射线建模电磁波传播。
According to stochastic characteristics of electromagnetic wave propagating in wireless channels, stochastic rays are employed to model electromagnetic wave propagation.
针对研究对象，在高度控制系统设计中，引入多目标多约束的随机射线优化方法。
Based on the research object, the random radiation optimization of multitargets and multi-restrictions is introduced into the design of altitude control system.
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