对近年来的紫外空间观测仪器（包括在研项目）作了扼要介绍，并对一些关键问题如烃基污染致使仪器灵敏度迅速下降，镜面紫外反射率低下及改......

We observed an Hα surge that occurred in NOAA Active Region 12401 on 2015 August 17, and we discuss its trigger mechani......