以三角形振子天线为基础对天线结构进行改进，提出了一种新型三角形组合振子天线。
A novel triangle combined monopole antenna was proposed based on the improvement of triangle monopole antenna.
本文利用直接时域法计算了由三单元V形振子组成的直线阵的时域辐射特性，得到了一些有用的结果，为时域天线的进一步研究提供参考。
The time-domain radiation characteristic of a three V-dipole array has been studied by direct time-domain method. Some valuable results are obtained.
本文运用三维有限元方法离散水体，研究了箱形术体的自振频率及动水压力振型。
In this paper, the natural frequencies and modes of box water body researched by using three-dimensional finite element method.
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