バックグラウンド放射 ほうしゃ せん
bakkuguraundohōshasende

Noun
Da Copula

て-form: Used to connect clauses, make requests, or chain actions of バックグラウンド放射線

1. Background radiation with/by. ; ; Connecting clauses with background radiation.; ; Requesting something with background radiation.; ; Chaining actions with background radiation.

Te-Form