这种方法的窍门在于光与无线电波的另外一项特性，即轨道角动量(Or bital Angular Momentum)。
The trick lies in another property of light and radio waves known as orbital angular momentum (OAM).
振幅足够大的静电波在等离子体中可使带电粒子的运动轨道发生改变。
The trajectory of charged particles in a plasma will be changed by electrostatic waves with large amplitude.
为了能通过卫星传送像奥运会这样的比赛项目，电视信号要先转换成无线电波，然后从某个地面发射站把无线电波送上轨道卫星。
In order to transmit an event such as the Olympics via satellite, television signals are first changed into radio waves, which are then sent from a station on earth to a orbiting satellite.
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