本文介绍了雷达天线的扫描波束理论，采用了用波束宽度描述天线辐射方向图的方法。
The text introduces the theory of the radar antenna 's scan wave by adopting the method of using wave width to describe antenna radiate direction FIG.
光学滤光片在连续的光谱中用于透过一定宽度的光谱带或在线状光谱中提取某些辐射。
Filter is used to transmit spectrum of definitive broad band in the continuous spectrum or to extract certain radiation in the line-spectra.
本文用考虑了相对论修正的势模型计算重夸克偶素的能谱、轻子宽度和辐射跃迁宽度。
Using a potential model with relativistic correction we evaluated the spectrum, lepton decay widths and radiative transition widths of heavy quarkonium systems.
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