There are, however, no interference problems with field-emission X-ray sources, so these can be used to take high-resolution pictures while treatment is proceeding.
而在场放射X射线源下就不会有这样的问题，可以在拍摄高分辨率图像的同时进行治疗。
2
The characteristics of the high Z ions are very important to the study of Xray lasing and other field.
重元素高电离的离子特性对研究激光核聚变和X射线激光等领域都很重要。
3
Using field emission cathode, Xray source can be made with several advantages: smaller volume and brighter, high frequency response, in-time turning on, etc.