decibels

A normal conversation reaches 55 decibels.

普通的谈话即可达55分贝.

When subjected to 100 decibels or more, hearing damage can occur in just 15 minutes.

100分贝或100分贝以上的声音在15分钟内就会对听力造成损害.

The typical lawn mower makes about 90 decibels of noise.

典型的割草机发出的声响约为90分贝.

A decrease or loss in a signal. Reduction of signal magnitude ( loss ) normally measured in decibels.

减小或 降低信号,信号减小或降低的多少通常用分贝来衡量.

At a level of 140 decibels people feel pain in their ears.

在140分贝的时候人们的耳朵就会感到疼痛.

However, psychologists distinguish between'sound " and " noise " .'sound " is measured physically in decibels.

然而, 心理学家把声音与噪声做了区别, 声音实际上可以用分贝来测量,而噪声却不能用同样的方法来测量.

As you all know, the normal noise threshold for private housing is 55 decibels.

正如你们知道的, 个人房子正常噪音为55分贝.

A hippopotamus'scream has been recorded at 115 decibels-louder than a jet airliner at takeoff.

河马发出的声音可以达到115分贝——比一架喷气式客机起飞时的声音还要大.

Watch the monitor and tell me if the level goes above forty decibels.

看着监测器,如果超过40分贝就告诉我.

The intensity of a nearby jet taking off is about 110 decibels.

一架在附近起飞的喷气机的声音强度大约是110分贝.

Decibels measured in water are different from those measured on land.

水下测量的分贝值不同于在陆地上测量.

The ordinate scale is linear in decibels.

纵坐标比例尺以分贝为单位是线性的.

Continuous exposure to sound above 80 decibels could be harmful.

持续暴露在强度高于80分贝的噪声中可能有害。

Forests to reduce noise pollution. 40-meter-wide forest belt noise can be reduced 10 to 15 decibels.

树林能减少噪音污染. 40米宽的林带可减弱噪音10—15分贝.

The amplitude defines how loud the sound is and is usually measured in decibels ( dB ).

声波实质上是 正弦曲线,它有振幅和频率.