The first step is to determine the unit-time reference dose rate .
第一步要确定单位时间参考剂量率。
It has the high safety of radiation protection and very low radiation dose rate.
辐射防护安全性能好，辐射剂量率非常低。
Objective To study a simple method for estimating cosmic radiation effective dose rate for aircrew.
计算某航空公司各类飞行人员飞行中受到的宇宙辐射有效剂量。
Objective To study a simple method for estimating cosmic radiation effective dose rate for aircrew.
计算某航空公司各类飞行人员飞行中受到的宇宙辐射有效剂量。
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