1.
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
2.
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
3.
Minimum performance requirements for high fidelity audio amplifiers
GB/T14200-1993高保真声频放大器最低性能要求
4.
High performance differential CMOS LNA design for low-IF GPS receiver
用于低中频GPS接收机的高性能CMOS差分低噪声放大器设计(英文)
5.
Study on Low-frequency Characteristic of Sound Absorption Layer by Embedding Viscoelastic Coated Material
嵌入粘弹性包覆层的吸声覆盖层低频性能研究(英文)
6.
Mechanical Properties of Vancomycin Loaded PMMA Bone Cement and the Influence of Low Frequency Ultrasonic on Them;
不同浓度万古霉素及低频超声对骨水泥机械性能的影响
7.
Study on Low Intensity and Low Frequency Ultrasound Influencing Activity of Activated Sludge;
低强度低频率超声对活性污泥活性的影响研究
8.
The Value of High and Iow Frequehcy Ultrasound and Mensentary Acoustic Contrast Examination in Diagnosis of Tubercular Peritonitis
低频与高频超声加肠系声学造影诊断结核性腹膜炎
9.
Diagnostic value of high frequency vs low frequency ultrasonography for acute appendicitis
高频超声与低频超声在急性阑尾炎诊断中的价值比较
10.
Although low frequency sound travels further than high-frequency sound, calls at higher frequencies give the bats more detailed information such as size, range, position, speed and direction of a prey's flight.
尽管低频声音比高频率的声音传播远，但高频叫声使蝙蝠能获得诸如大
11.
Study on Characteristics and Measurement Methods of the High-power Low-frequency Ultrasonic Fields for Cleaning;
大功率低频超声清洗声场的声场特性及测量方法研究
12.
The finite element design of a low-frequency broad-band underwater transduer with fluid cavity resonance
一种低频宽带液腔谐振水声换能器有限元设计
13.
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
14.
Analysis of an Integrated Realizable Low-Phase Noise VCO
低噪声集成压控振荡器噪声性能分析
15.
Low Frequency Noise Measurement Methods and Reliability Study of Thin-film Resistor;
薄膜电阻器件低频噪声测量与可靠性研究
16.
Application of Low Frequency 1/f Noise in the Reliability of Semiconductor Laser;
低频1/f噪声在半导体激光器可靠性中的应用
17.
Research on Chaotic Characteristics of Low-frequency Electrical Noise in Semiconductor Laser Diodes
半导体激光器低频噪声的混沌特性研究
18.
Numerical simulation of impedance characteristic of low-frequency ultrasonic nozzle for aeroponic culture
低频超声雾化栽培喷头阻抗特性的数值模拟