decibel 的定义
Physics.
- a unit used to express the intensity of a sound wave, equal to 20 times the common logarithm of the ratio of the pressure produced by the sound wave to a reference pressure, usually 0.0002 microbar.
- a unit of power ratio, the number of units being equal to a constant times the logarithm to the base 10 of the intensities of two sources.
- a unit used to compare two voltages or currents, equal to 20 times the common logarithm of the ratio of the voltages or currents measured across equal resistances. Abbreviation: dB, db
更多decibel例句
- The ANC does offer increased isolation and a more immersive experience than the Evo, but I couldn’t otherwise detect a huge sonic distinction, despite the slight difference in decibel output.
- Understand the differences between fuel options and don’t overlook the decibel rating.
- Some cities, including Greenwich, Connecticut, and Palm Beach, Florida, regulate the decibel volume and times of use of leaf blowers.
- The frame is made with powder-coated steel tubing that resists scratching and staining, and while you’re adjusting it, the motor keeps the noise level relatively unobtrusive, at under 50 decibels.
- Noise, or sound power, is measured in decibels and is an effective way of gauging the noise introduced by home appliances in relation to other common residential sounds.
- The decibel levels fell a fraction, but we were still in the heart of a crowd that believed in Brazil.
- Some men raise their voices when the argument heats up, and if women try to match their decibel level, they risk sounding shrill.
- Their mission: to raise the awareness of poverty to the decibel level of other hot-button media issues.
- The decibel level of all this at Fox and the usual redoubts will be deafening.
- Maybe it was the fact that the candidates were sitting around a table, which clearly lowered the decibel level.