732 medium- and short-wave broadcasting transmitting and relay stations, covering 92.1 percent of the population;
共有中、短波广播发射台和转播台732座，广播综合人口覆盖率达到92．1％；
Time the beam right and the star could be turned, in effect, into an FM transmitter-broadcasting to the universe on the underlying carrier-wave of the Cepheid's pulsation.
只要恰当地控制粒子束的照射时间，该恒星将有效地成为一台调频电台——以“造父变星”的脉冲为基础载波向宇宙广播。
The traveling wave tube (TWT) is an important high-power microwave resource, which has been applied in many fields such as radar, broadcasting, high-power microwave weapon and so on.
行波管（TWT）广泛应用于雷达、通讯、广播、电子战、高功率微波武器研究、高能物理、电子对抗等各种电子设备中，是一种非常重要的微波器件。
Short wave is good for broadcasting very long distances. The short wave signals bounce off the ionosphere that surrounds the Earth, back to the ground and then back to the ionosphere.
短波有利于长距离传输广播节目，短波信号被围绕地球的电离层反射，能在大地和电离层间来回反射。
Time the beam right and the star could be turned, in effect, into an FM transmitter—broadcasting to the universe on the underlying carrier-wave of the Cepheid's pulsation.
精确调制中微子束实际上能够将这些恒星变成FM发射器，使用造父变星的脉冲作为基础载波对整个宇宙进行广播。
BBC world Service is the world biggest network 140 million listeners across the globe broadcasting in 44 languages heard on shortwave, median wave, FM and satellite.
英国广播公司国际广播电台是世界上最大的广播网，在全球拥有一亿四千万听众，可以通过短波、中波、调频和卫星收听以44种语言广播的节目。
BBC world Service is the world biggest network 140 million listeners across the globe broadcasting in 44 languages heard on shortwave, median wave, FM and satellite.
英国广播公司国际广播电台是世界上最大的广播网，在全球拥有一亿四千万听众，可以通过短波、中波、调频和卫星收听以44种语言广播的节目。
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