数值结果表明，金属栅厚度对漏波天线波求方向影响较小，但对漏波天线的辐射效率和波束宽度有明显的影响。

Numerical results show that the effect of metallization thickness is smaller on the direction of main beam and very noticeable on the beamwidth and aperture efficiency.

youdao

本文导出了地面站常用的改进型波束波导馈电高效率双镜天线的辐射特性的计算式。

In this paper, the equations for calculation of the radiation performances on high efficiency double reflector antenna fed by beam waveguide are derived.

youdao

多波束测深仪是一种高效率、高精度、高分辨率的海底地形测量设备，特别适合大面积的扫海测量作业。

Multi-beam swath bathymeter is a seafloor mapping equipment with high efficiency, high accuracy and excellent resolution, especially fitted for wide sweep mapping.

youdao