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loudness ['laudnɪs] n
gen.	高〔大〕声
loudness ['laudnɪs] adj.
auto.	噪声级
el.	声级
oil	响度
tech.	音量; 高声
loudness The magnitude of the physiological sensation produced by a sound, which varies directly with the physical intensity of sound but also depends on frequency of sound and waveform ['laudnɪs] adj.
environ.	响度 (声音引起的生理感觉的幅度，它直接区分于声音的物理强度，而且依赖于声音的波形和频率。)

loudness : 123 phrases in 16 subjects

Automobiles	2
Aviation	1
Communications	2
Ecology	1
Electric machinery	1
Electronics	15
General	4
Geophysics	1
Metallurgy	1
Multimedia	1
Nautical	2
Nursing	5
Oil / petroleum	3
Otorhinolaryngology	35
Technology	37
Telecommunications	12