Move about since that annual straight value is solar for the summit year of the period of 11 years, therefore, day Mian submit summit annual peculiar circular form.
Move about since that annual straight value is solar for the summit year of the period of 11 years, therefore, day Mian submit summit annual peculiar circular form.
由于那年正值太阳活动11年周期的峰年，因此，日冕呈峰年特有的圆形状。