1.
Technology Research on the Application of Sonic Wave to Eliminating Ash and Removing Slag from Boiler Furnaces;
低频声波在锅炉中清灰、除渣的应用技术研究
2.
This firmly establishes the nature of the oscillations as low acoustic eigenmodes of the subphotospheric layers.
这就确凿地证实了振荡的本质是次光球层的低频声波本征模式。
3.
31 Bit Low Frequency SAW Programmable Matched Filter
31位低频声表面波可程序匹配滤波器
4.
Waveform Fusion and Background Normalization for Low Frequency Active Sonar;
低频主动声纳波形融合与背景归一化
5.
Acoustic agglomeration of coal-fired fly ash particles in low frequency sound fields
燃煤飞灰低频下声波团聚的实验研究
6.
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
7.
Study on algal control by low-frequency,low-power ultrasonic
低频、低功率超声波抑制藻类生长的效果
8.
Study on the Scream during the Process of the High-power Low-frequency Ultrasonic Cleaning;
低频大功率超声波清洗过程中啸叫现象的研究
9.
Waveform simulation of low frequency line spectrum on propeller cavitation noise
舰船螺旋桨空化噪声低频线谱波形仿真
10.
Seismic Wave by Low Frequency Point Sound Source in Liquid-solid Layered Hemisphere
液固半无限空间低频点声源的地震波动
11.
Study of Theoretic Model on Low-frequency Transducer for Sonic Logging
基于声波测井低频换能器的理论模型研究
12.
Comparison Study of Low-Frequency PWM Control Methods for 2-Phase Traveling Wave Ultrasonic Motors
两相行波超声波电动机低频PWM控制策略比较研究
13.
Generating or using waves or vibrations with frequencies below that of audible sound.
次声的产生或使用频率低于人耳能听见的声音的波或振动的
14.
Improvement and experiments of traveling wave tube measurement system for low-frequency properties of underwater acoustic materials
水声材料低频声性能行波管测量系统的改进及实验
15.
Uncertainty analysis of traveling wave tube measurement method for low-frequency properties of underwater acoustic materials
水声材料低频声性能测量行波管法的测量不确定度分析
16.
Frequency response of fourth-order acoustic low-pass filtering fiber-optic hydrophones
四阶声低通滤波光纤水听器的声压灵敏度频响特性
17.
The hearing aid determines if the sound is a high frequency sound or a low frequency sound.
?通过100个滤波器和音素分析器决定哪些声音是高频或低频声,哪些声音是元音和辅音。
18.
The middle part of an audio frequency.
中声频，中频声波频率的中间部分