Last Updated
：2025/12/07
mains hum
Noun
uncountable
Japanese Meaning
交流電源（主電源）の周波数の倍数の周波数を持つ、電気機器などから発せられる低周波のハム音
Quizzes for review
A sound associated with alternating current which has a frequency a multiple of that of the mains electricity.
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See correct answer
mains hum
Late at night the steady mains hum of the transformer made concentration impossible.
See correct answer
Late at night the steady mains hum of the transformer made concentration impossible.
音声機能が動作しない場合はこちらをご確認ください
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