バックグラウンド放射 線 の
bakkuguraundohōshasenno
1. Background radiation
Noun
#847782
1. Background radiation
1. selection; choice
1. thousand; 1,000
1. speciality; specialty
2. sole interest; single focus
1. cent (monetary unit)
1. to choose; to select
1. 1,000; one thousand
1. radiation; emission