1.
Handheld microphones usually have their low frequencies intentionally rolled-off.
手持话筒通常有意的做低频衰减。
2.
The ensemble or instrument microphone works well at a distance because its bass response has not been rolled-off by the manufacturer.
距离对乐器话筒的影响不是很大，因为它们在出厂的时候没有作低频衰减，比较平直。
3.
Ground roll wave has characteristics of strong energy, low frequency and slow attenuation.
面波具有能量强、频率低、吸收衰减缓慢等特点。
4.
Measurement of the attenuation coefficient of surface acoustic wave by means of the light diffraction
衍射法测量低频液体表面波的衰减系数
5.
The rolloff is usually expressed as attenuation per unit interval, such as6 dB per octave.
衰减截止频率通常被表示为单位音程的衰减，比如每一个八度降低6分贝。
6.
video attenuator switch
视频信号衰减器开关
7.
dependency of attenuation on frequency
衰减对频率的从属性
8.
High attenuation to low frequency,excellent perform ance of common mode and differential mode interfere nce suppression.
极佳的低频段衰减特性，具有良好的共模和差模干扰抑制性能。
9.
In the stopband of an LPF with a6 dB/ octave slope, for example, every time the frequency doubles, the amount of attenuation increases by6 dB.
例如，在低通滤波器的抑止频带，八度音程（分贝）率表示频率每翻一倍，衰减量就降6分贝。
10.
under frequency load shedding
低频率自动负载减少
11.
Test method of attenuation stability for radio-frequency cables
GB/T4098.6-1983射频电缆衰减稳定性试验方法
12.
Methods of measurement of attenuation constant for radio-frequency cables
GB/T4098.4-1983射频电缆衰减常数测量方法
13.
Study of Rainfall Attenuation Characteristics of Ku-Band Satellite Link
Ku频段卫星链路降雨衰减特性分析
14.
Cloud and fog Attenuation for Ka-band Satellite Communication Satellite-earth Link
Ka频段卫星通信地空链路的云雾衰减
15.
Developing Low-grade and Depleting Oil and Gas Fields;
促进对低品位和衰减期油气田的开发
16.
The attenuation coefficient decreases with increasing of frequency and the gas density.
衰减系数随频率增加而减小,并且随密度增加而减小.
17.
Theory Analysis of Ring Laser Gyroscope Biassed by ATR Magnetic Mirror
衰减全反射磁镜偏频激光陀螺的理论分析
18.
Study of Characteristic of Electromagnetic Wave Attenuation in Frequency Domain in Coal-Rock Medium;
煤岩介质电磁波衰减特性的频率域研究