飞行员开始通过无线电发出指令，引导他安全着陆。
The pilot began to talk him down by giving instructions over the radio.
无线电测量既能引导激光测量系统，又能实现星间通信。
Radio metrology not only guides laser metrology, but also provides communication between satellites.
无线电测量既能引导激光测量系统，又能实现星间通信。
Radio metrology not only guides laser metrology, but also provides communication between satellites.
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