无线电波反射 radio-wave reflection
地面电波反射 ground wave reflection
无线电波反射法 radiowave reflection method
电磁波反射器 electromagnetic radiation reflector
电磁波反射镜 electromagnetic mirror
电磁波反射法 echolation
电离层反射波 ionospheric ray ; [地物] ionospheric wave ; ionosphere wave
电磁波反射 electromagnetic reflection ; reflection of electromagnetic wave
电磁波定向反射 Reflection of EM waves
由于电离层会把这些频率的无线电波反射回地球表面，所以数百上千公里以外的接收器可以检测到它们。
Because radio waves of these frequencies are reflected back to the Earth's surface by the ionosphere, they can be detected by receivers hundreds of miles away.
大多数天线被制成碟形，用以收集和反射无线电波至亚反射器，就像曲面镜将可见光聚焦于一点一样。
Most antennas are made in the shape of a dish to collect and reflect the radio waves to the sub reflector, in the same way as a curved mirror focuses visible light to one point.
接收器和放大器接收来自副反射器的无线电波，并使这些微弱的无线电波强大到足以被记录下来并转化成电子信号。
A receiver and amplifier receive the radio waves from the sub reflector, and make these weak radio waves strong enough to be recorded and turned into electronic signals.
应用推荐