The technique , called helioseismology , is similar to the use of seismic waves for detecting underground features on earth . being able to reveal features beneath the surface of the sun , helioseismolgy has contributed a lot to modern understanding of the sun . it is becoming also an important tool for studying the solar - terrestrial relations 日震学和以地震波侦查地球内部构造的方法相类似，科学家利用日震学研究太阳内部的结构，使我们对太阳有更多的了解，而日震学亦成为研究日地关系越来越重要的工具。
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