The change of the Xrayexposure with increasing the Xray energy and the measurement of multichromatic (white) X ray exposures were also discussed, respectively.
讨论了软X射线照射量随能量的分布特性及混合能量X射线（白光）的照射量测量方法。
2
During the brief X-rayexposure, you'll be asked to stand still and hold your breath.
在简短的X光暴露期间，你要一直保持站立并屏住呼吸。
3
Objective To study whether it can be directly compared that one of Xray pictures taken in different period and exposure conditions with one processed by histogram normalization.