周波 しゅうは すう利用 りよう効率 こうりつでしょう
shūhasūriyō kōritsudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 周波数利用効率

1. Frequency utilization efficiency, likely.; Probably frequency efficiency.

Polite
Presumptive
Conjecture
Computing