Shield material with some certain composition can absorb a large part of low energy photon of X-ray and reduce the radiation effect on electronic component.

采用一定组分的材料对X射线进行辐射屏蔽，可以吸收大部分的低能光子，减少X射线对电子系统的辐射损伤。

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The concept of radiation effects of detention was explained and photon produce process of low-pressure mercury was uras analyzed, from the perspestive of atomic energy level transition.

从原子能级跃迁的角度，分析了低压汞灯的光子的产生过程，说明了辐射禁锢效应的概念。

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