Image taken by trace , showing a magnetically active region at the edge of the sun 由trace拍摄的照片,显示出太阳边沿的磁力活跃区。
( 2 ) there is a complex magnetic field in the active region before the flare eruption ( 2 )耀斑爆发前,该区域内出现复杂的磁位形。
Gth is the active region gain required to offset losses in the regions exterior to the active region Gth是为了补偿在有源区以外的区域中的损失所要求的有源区增益。
The prediction of energetic events and " space weather " therefore depends on observation of sunspots and active regions 要准确预测太阳的高能活动和太空天气,有赖对太阳黑子和太阳上活跃区域的长期监察。
We began our search in one of the world ' s most seismically active regions ? the san andreas fault system that runs through california 我们从全世界地震最活跃的区域著手:绵亘美国加州的圣安地列斯断层系统。