【摘要】 简要介绍了在1988－1995年期间冕洞观测研究的主要进展．文中共分五个方面：1．冕洞磁场观测研究的新进展；2．显洞在太阳活动周不同位相时的规律性；3．冕洞区高速太阳风观测的新结果；4．冕洞加热问题；5．存在问题．更多还原

【Abstract】 This paper introduces briefly the main progress of observations and investigations on coronalholes during 1988-1995. It is divided into five parts: 1. The progress of observations andinvestigations on the magnetic fields in coronal holes; 2. The regUlarity of coronal holes in thedifferent phases of the solar cycle; 3. The new results of high--speed solar wind from the regionsof coronal holes; 4. The problem of heating coronal holes; 5. The problems to be solved.更多还原