subsonic
Able to be reabsorbed
(of a sound, scientific) having a frequency too low to be audible / (of a sound, literary) very quiet, almost inaudible
(derogatory) An establishment, such as a shop or display, where tourists are encouraged to spend money on goods or services not necessarily of good value.
(Australia) A pink coloured confectionery in the shape of a rod or stick and flavoured to taste and smell like musk.
実験中、科学者たちは通常のマイクでは検出できない、可聴域を下回る周波数の圧力波を測定した。
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DiQt
Free
★★★★★★★★★★