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本文简述用双滤膜法和三段法测量某地下商场内氡及其子体浓度的结果。测量结果和剂量估算表明，该地下商场工作人员所受氡子体内照射剂量仍在正常本底范围内，不会对工作人员造成不利于健康的影响。
This article briefly describes the results of measuring the concentrations of radon and its daughters in an underground shopping mall by using the double-membrane method and the three-stage method. Measurement results and dose estimates indicate that the dose of radon exposure to the underground mall staff is still within normal background and will not adversely affect the health of staff.