x
uploads/decibel.jpg

decibel n.【物理學】分貝〔音量單位〕。

decidable

Abstract : this paper described the basic concept and expressions of the decibel and neper . it also explained some merits of the calculation rntes and application ranges of the measuremeut units 文摘:本文闡述了分貝與奈培的基本概念和表示方法,同時還說明了該計量單位的優點、計算法則和應用范圍。

The authors explain how they were able to reduce noise levels in their animal facility by as much as 15 decibels in some areas using readily available industrial and architectural acoustical panels 作者群說明他們如何在其動物設施中利用可購得的工業產品和建筑用之隔音版有效降低噪音至15分貝。

The nco limits are measured via the 30 - minute equivalent level in unit of a - weighted decibels ( db ( a ) ) , which is a commonly used international standard 該條例所訂的聲量上限是以每三十分鐘時段內的平均噪音能量水平量度,以a加權分貝值為單位(分貝( a ) ) ,該準則為國際普遍采用的標準。

The researchers note that previous studies showed that regular personal stereo use was linked to an average hearing loss of about 3 decibels , a level of “ limited clinical importance . 研究人員注意到,以往的研究表明,經常戴耳機會使聽力平均喪失3分貝,這在臨床上的影響很小

Compared with metal pipe , clean health products need further sound insulation is it reduce high - speed noise decibel that rivers produce count relatively to come 與金屬管相比,凱佳產品不需進一步隔音來降低相對高速水流所產生的噪音分貝數。

But in those men who had a history of ear infections , the use of personal stereos “ was associated with a mean extra hearing loss of 11 ( decibels relative hearing loss . 但對有耳部病史的人來說,使用耳機造成的聽力損失平均達11分貝

Conversation takes place at around 40 decibels , a subway train is about 80 decibels , and a rock concert is from 80 to 100 decibels 人交談的聲音強度一般為40分貝,地鐵的噪音強度約為80分貝,搖滾音樂會聲音強度在80到100分貝之間。

The applied evaluation of depth of anaesthesia with brainstem auditory evoked potential in three different decibels level in patients undergoing craniocerebral surgery 3種聲強下腦干聽覺誘發電位在顱腦手術麻醉深度評估中的應用

The level at some particular point is the gain or loss of power , expressed in decibels ( db ) between that point and some arbitrary reference point 某一特定點的電平是指該點和某一任意參考點之間的功率增益或損耗,用分貝表示。

7th , has 120 decibels police sirens to inform the neighbors all about also to be possible to close police siren silent digit dialing to report to the police 7有120分貝的警笛通知四鄰也可關閉警笛無聲撥號報警。

Experts at the mayo clinic in minnesota say any sound above ninety decibels for long periods may cause some hearing loss 位于明尼蘇達洲梅奧診所的研究者表示長期接聽高于90分貝的任何聲音均可能會引起某種聽力受損。

Experts at the mayo clinic in minnesota say any sound above ninety decibels for long periods may cause some hearing loss 明尼蘇達的馬約診所里的專家說長期聽任何一種90分貝以上的聲音,都可能導致一些聽力的損失。

The keyset is locked one minute after 5 times wrong words . if it is moved , knocked or hitted strongly , it ' ll give out a high - decibel alarm 5次錯碼鎖住鍵盤1分鐘。搬移、敲擊、大力碰撞都將發出高分貝報警聲。

Measured in decibels6 , noise intensity can range from zero , the quietest sound the human ear can detect , to over 160 decibels 按分貝計算,噪音強度可以從零(人耳所能感到的最低聲音)到160分貝以上。

I yell at a decibel machine hysterically , a series of chirps , with unknown tones , till i am voiceless 我對著分貝器歇斯底里的喊嘰里咕嚕不知所云的音調一串一串的喊!一次都喊到我無法發聲為止。

But the roar of the crowd combined with the singer ' s own low - decibel delivery ensured few could hear anything he said 但歌迷的歡呼聲都把杰克遜的聲音蓋住了,幾乎沒人能聽見他在說什么。

But the roar of the crowd combined with the singer s own low - decibel delivery ensured few could hear anything he said 但歌迷的歡呼聲都把杰克遜的聲音蓋住了,幾乎沒人能聽見他在說什么。

But the roar of the crowd combined with the singer ' s own low - decibel delivery e ured few could hear anything he said 但歌迷的歡呼聲都把杰克遜的聲音蓋住了,幾乎沒人能聽見他在說什么。

The intelligent degree of the common box is general at 85 90 db decibel its , upscale box is then in the l00db above 普通音箱的靈敏度一般在85 90db分貝之間,高檔音箱則在l00db以上。