McBride and his co-authors estimated that individuals living near coal-fired installations are exposed to a maximum of 1.9 millirems of fly ash radiation yearly.
McBride和合作者估计生活在煤电厂附近每年暴露在最高达1.6毫雷姆的浮尘放射性中。
3
The average American receives 360 millirems of radiation each year, 300 from natural sources and 60 from man-made activities. (a rem is a unit of radiation exposure.)