...剪切应力是由绝缘材料的功能、选择成型的工艺、 负载条件和辐射暴露水平（ 负载条件和辐射暴露水平（Radiation Exposure Level）等决定的。一般取极 ）等决定的。
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The health effects caused by radiation exposure depend on its level, type and duration.
辐射对健康的影响与其剂量、类型与持续时间有关。
Is there a 'safe' level of radiation exposure for a patient during pregnancy?
是否有患者在怀孕期间的“安全”辐射暴露上限？
Analysis and evaluation were carried out on the safety grade of the radiation source, radiation prevention site and the exposure dose level of the working staff.
方法通过现场监测，按照标准对辐射源安全级别，场所辐射防护区域，工作人员接受的剂量水平进行分析评价。
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