The change of the X ray exposure with increasing the X ray 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。
Conclusion Radiation injuries may effectively decreased with reducing X-ray tube voltage and exposure level under the precondition of X-ray image quality to be guaranteed.
结论在保证X线图像质量前提下，降低X射线管电压和曝光量，可以有效地减少放射性损害。
Conclusion Radiation injuries may effectively decreased with reducing X-ray tube voltage and exposure level under the precondition of X-ray image quality to be guaranteed.
结论在保证X线图像质量前提下，降低X射线管电压和曝光量，可以有效地减少放射性损害。
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