1. limb brightening of radio quiet Sun 
   宁静射电太阳临边增亮
2. a sudden eruption of hydrogen gas from the sun's surface; associated with sunspots and radio interference. 
   太阳表面氢气的突然爆发；经常和太阳黑子有关并导致无线电波干扰。
3. (astronomy; of the sun) characterized by a high level activity in sunspots and flares and radio emissions. 
   （天文学；指太阳）以太阳黑子、耀斑和辐射的高等级活动为特点。
4. Radio stations; radio programs. 
   无线电台；无线电节目
5. radio wave propagation in tropospheric radio duct 
   对流层波导电波传播

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• 1. 射电太阳
  radio subsolar temperature 日下点射电温度...radio sun 射电太阳...radio supernova remnant 射电超新星遗迹
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