单词	decibel
释义	decibeldec‧i‧bel /ˈdesəbel, -bəl/ noun [countable] (written abbreviation dB) Word Origin WORD ORIGINdecibel Origin: 1900-2000 deci- + bel unit of sound power (20-21 centuries), from Alexander Graham Bell (1847-1922), US inventor Examples EXAMPLES FROM OTHER DICTIONARIES Noise levels in factories must not exceed 85 decibels. EXAMPLES FROM THE CORPUS About 15 percent were listening at levels of 110-115 decibels. Any bar or disco which exceeds its permitted decibel limit can be shut down on the spot for the night by police. At 95 decibels, about the sound level of a lawn mower, workers are allowed four hours' exposure. NoiseBuster reduces up to 15 decibels in that frequency bandwidth. The acoustics of an empty garage or any interior location intensifies the decibels to an unbearable level. To give you an idea what that means, 80 decibels is generated by a typical alarm clock. Tonight's contribution is awesome in the decibels of that noise. Twenty-five dollars was considerably more than he expected, they must have been charging by the decibel. word sets WORD SETS► Measurement acre, nounacreage, nounavoirdupois, nounbaker's dozen, nounbalance, nounbarometer, nounbaseline, nounbasin, nounbaud rate, nounbearing, nounbecquerel, nounblack box, nounboiling point, nounbottle, nounbox, nouncalculator, nouncalibrate, verbcalibration, nouncc, centi-, prefixcentimetre, nouncircumference, nouncl, clock, verbcm, cu, cubic, adjectivecubit, nouncup, nouncupful, nouncwt, daylight saving time, noundeci-, prefixdecibel, noundecimalization, noundeflection, noundegree, noundensity, noundepth, noundimension, noundipstick, noundisplacement, noundoz., noundozen, numberelevation, nounfactor, nounfathom, nounfl oz, fluid ounce, nounfoot, nounft, g, gage, noungal, gallon, noungauge, noungauge, verbGB, Geiger counter, noungigabyte, noungill, noungirth, noungm, graduated, adjectivegraduation, noungrain, noungram, noungramme, noungrid, noungross, adjectivehandful, nounhectare, nounhertz, nounhigh, adjectivehundredweight, nounimpedance, nounimperial, adjectiveinch, nounindicator, nouninstrument, nounjoule, nounkarat, nounkg, kilo, nounkilo-, prefixkilogram, nounkilometre, nounkm, knot, nounl, latitude, nounlb, league, nounlength, nounlight year, nounliter, nounlitre, nounlow water mark, nounmax, nounmaximum, adjectivemean, adjectivemeasure, verbmeasure, nounmedian, nounmedium, adjectivemegaton, nounmelting point, nounmental age, nounmeter, nounmeter, verb-meter, suffixmetre, noun-metre, suffixmetric, adjectivemetrication, nounmetric ton, nounmg, MHz, microsecond, nounmile, nounmillennium, nounmilli-, prefixmillibar, nounmilligram, nounmillilitre, nounmillimetre, nounminus, adjectiveminute, nounml, mpg, mph, nano-, prefixnanosecond, nounnautical mile, nounounce, nounoverweight, adjectiveoz, pace, verbpart, nounpedometer, nounpint, nounplus, adjectivepoint, nounpound, nounpunnet, nounqt, quantify, verbquart, nounradioactive dating, nounradius, nounrain gauge, nounread, verbreading, nounrecord, verbreset, verbrev, nounrotation, nounrpm, rule, nounruler, nounscale, nounsea level, nounsea mile, nounseismograph, nounsensor, nounset square, nounsextant, nounsnowfall, nounsoundings, nounsq., subsonic, adjectivesundial, nountherm, nountimberline, nountog, nounton, nountonnage, nountonne, nountroy weight, noununit, nounvoltmeter, nounvolume, nounwatch, nounwatt, nounwattage, nounweighbridge, nounweight, nounwidth, nounwt., yard, nounyardage, nounyardstick, nounyd, zero, number a unit for measuring the loudness of sound:  noise levels exceeding 85 decibels
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