荧光效应是指当高能x射线光子激发出被照射物质原子的内层电子后，较外层电子填其空穴而产生了次生特征x射线(或称二次特征辐射)的现象。因其本质上属于光致发光的荧光现象，即与短波射线激发物质产生次生辐射的荧光现象本质相同，故称为荧光效应，也称为荧光辐射。
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伦琴确信，荧光效应不是起因于阴极射线。
Rontgen was certain that the fluorescent effect was not due to cathode rays.
此外，还扼要地介绍了平衡滤光片的制造方法及它的荧光效应。
The fabricating methods of balanced filters and their fluorescence effects are briefly described.
本文着重研究消荧光效应的两个问题，即荧光消失的规律和荧光消失所伴随的现象。
The regularity of fluorescence disappearance and some accompaniment phenomena are studied in this paper.
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