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。

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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％；

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