极点是谐振区表征雷达目标的有效特征，其具有不变性。
Because of its invariability, poles is the most effective characteristic signal of the radar target in resonance region.
介绍了低频区、谐振区及光学区机载天线辐射场、电磁干扰余量的求解法。
The solutions of the antenna gain and electromagnetic interference margin in the regions of low frequency, resonance and high frequency are discussed.
对于部分电极晶片，分析了电极尺寸和电极区的等效厚度对有限谐振元振动特性的影响。
For partially electroded crystal plate, the influences of scale of electrode and equivalent thickness of electroded region on vibrations characteristics of finite resonator are analyzed.
该谐振腔由一螺旋面反射镜和一球面反射镜构成，可充分提取激活区的能量并输出单束激光。
This resonator is composed of a helical reflecting mirror and a spherical reflecting mirror. The single laser beam can be effectively extracted.
对薄片激光器的谐振腔进行了设计，采用平凹腔的结构，并使其在稳区工作并有较大的基模体积。
Resonator cavity of thin disk laser is designed, using plane-concave cavity to make it work stably and obtain large fundamental mode volume.
对薄片激光器的谐振腔进行了设计，采用平凹腔的结构，并使其在稳区工作并有较大的基模体积。
Resonator cavity of thin disk laser is designed, using plane-concave cavity to make it work stably and obtain large fundamental mode volume.
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