扇形波束 [通信] fan beam ; fan-shaped beam ; [通信] fanning beam

扇形波束天线 Fan-beam antenna ; fanned beam ; antenna ; [电讯] fanned-beam antenna

扇形波束信标 fan bean beacon ; fan-beam beacon

扇形波束场型 fan-beam pattern

扇形波导 fan-shaped waveguide

扇形滤波 fan filtering

扇形雷达波束 [雷达] beavertail