bn:26692152n
Noun Concept
EN
milliroentgen
EN
A unit of exposure to ionizing radiation, one thousandth of a roentgen. Open English WordNet
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EN
A unit of exposure to ionizing radiation, one thousandth of a roentgen. Open English WordNet
EN
The typical exposure to normal background radiation for a human being is about 200 milliroentgens per year, or about 23 microroentgens per hour. Open English WordNet
Open English WordNet