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周波 しゅうは数 すう利用 りよう効率 こうりつだった
shūhasūriyō kōritsudatta

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Noun
, 
Da Copula

The past form of 周波数利用効率

1. Frequency utilization efficiency was.

Past/Perfective
, 
Computing

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周波数利用効率だった

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