Word Meaning 自然放射線
しぜんほうしゃせん
shizenhoushasen
自然放射線 is read as しぜんほうしゃせん (shizenhoushasen) and means background radiation.
Meaning
English
- background radiation
Reading
Kana
しぜんほうしゃせん
Romaji
shizenhoushasen