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the world > matter > physics > science of sound > [noun] > instrument for measuring volume > unit of calibration (2)
volume unit1940

= VU n. at V, n. initialisms 2.

VU1940

a unit in which some types of volume indicator are calibrated, a sine wave with a power of 1 mW being assigned the reference value of 0 VU (see…

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更新时间:2025/3/3 22:25:44