ƻϩߺȤФɾ
ʪǽǻ
U-238
Bq g-1
Th-232
Bq g-1
K-40
Bq g-1






Ͼ
Ѿ
Ψ

Υǻ
(g m-3)
ηиݼ®
g h-1
ǯֺȻ

θƵ®
1.2 m3 h-1ʸ͡

ʪǡ١
 
Ĥ