为了提高环境累积比释动能的测量准确度，特别介绍了环境剂量计的衰退修正及其计算方法。

The fading correction and its corresponding calculation method were specially introduced in this paper for improving the accuracy of the environment cumulate kerma.

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结果比释动能校准因子比对的偏差为- 0.5%，水吸收剂量校准因子的比对偏差为0.4%。

Results the deviation of our air kerma calibration factors is -0.5%, and the deviation of our absorbed dose to water calibration factors is 0.4%.

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