1.
Low Noise Frequency Conversion Technology and the Improvement on Rubidium Frequency Standard;
低噪声频率变换技术及铷原子频标的改进
2.
The middle part of an audio frequency.
中声频，中频声波频率的中间部分
3.
pressure frequency response of microphone
传声器声压频率响应
4.
preferred frequencies for acoustical measurement
声学测量的最佳频率
5.
free-field frequency response of microphone
传声器自由场频率响应
6.
directional frequency characteristic of microphone
传声器指向性频率特
7.
directional frequency response of microphone
传声器指向性频率响应
8.
Acoustics--Ultrasonic power measurement in the frequency range 0.5～10MHz
GB/T7966-1987声学0.5～10MHz频率范围内超声声功率的测量
9.
The frequency effect of a low-MHz bi-beam ultrasonic irradiation;
低频双束超声辐照的频率效应(英文)
10.
Measurement of the Fequency Response of a Loudspeaker Using Butterworth Impulse
用Butterworth脉冲测量扬声器的频率频响特性
11.
A loudspeaker designed to reproduce bass frequencies.
低频扬声器设计用来再现低音频率的扬声器
12.
diffuse-field response of microphone
传声器扩散声场频率响应；传声器扩散场响应
13.
Chirp up the chirp is played from start frequency to the end frequency.
短促声波开始短促声波从起动频率对结束频率播放。
14.
Hot firings show that the frequency of the oscillating shock is close to the acoustic frequency.
热试结果表明，振荡激波的频率与声频相近。
15.
The Influence to the FH System Caused by Phase Noise of Frequency Synthesizer
频率合成器相位噪声对跳频通信系统的影响
16.
Modulation-Free Laser Frequency Locking by AOM Shifted Cesium Sub-Doppler Spectra
声光偏频亚多普勒光谱无调制激光频率锁定
17.
An X band Low Phase Noise Wideband Frequency Synthesizer
X波段宽带低相位噪声混频锁相频率源
18.
The application of frequency division technique in parameter measurement for SAW sensor
分频技术在声表面波传感器频率测量中的应用