圆形介电波导
circuit dielectric waveguide
矩形-圆形波导转换器
rectangular-circular waveguide transducer
波形圆板
corrugated circular plate
交流动圈式圆形电表
AC moving coil round instrument
交流动铁式圆形电表
AC moving iron round instrument
截断圆形波导
truncated circular wave guide
小圆形电连接器
small round electric connector
圆形波长可变滤光片
circular variable wavelength filter