[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

核辐射仪必须看是否经过标准源校准(Cs-137或Co-60)并提供校准证书,无校准的廉价模块(网购DIY成品)读数可能偏差数倍,仅能判断'有无异常升高'而不能作为绝对剂量依据

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