A.0.072mg/m3B.0.053mg/m3C.0.124mg/m3D.0.082mg/m3
A.-10℃~-40℃B.-0℃~-40℃C.-15℃~-40℃D.-10℃~-50℃
A.Bq/m3B.BqC.Bq/m2D.Bq/(m2·s)