某一既定单次照射剂量分成间隔一定时间的两次照射所观察到的存活细胞增加，是由于发生了（）_内科、外科、放疗共用试题_全学科试题题库

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某一既定单次照射剂量分成间隔一定时间的两次照射所观察到的存活细胞增加，是由于发生了（）
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