X-ray photon source 射线光源
X-ray photon spectroscopy X射线光子光谱学
x-ray photon x射线光子
hard X-ray photon sieve 硬X射线光子筛
x-ray photon spectroscopy xps x射线光电子谱
photon excited X-ray fluorescence analysis 光子激发的X光荧光分析
The status of osteoporosis in 54 volunteers was measured by Single Photon Absorptiometry and measurement of the X-ray film with a self-control trial design.
用单光子吸收扫描与X线摄片计测法，对54例测试者的骨质疏松情况进行了自身对照测定和比较。
The paper analytically discusses two factors, the spectrum of photon and the scattered radiation by the detector, which affect the attenuation efficient of the object in flash X-ray radiography.
研究闪光照相中影响材料有效吸收系数的两个主要因素，即X光的能谱效应和散射影响。
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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