1.
Study on Improvement of Dewaterability of Sludge by Double-frequency Ultrasonic Generating Trough
槽式双频超声波发生器改善污泥脱水性能研究
2.
Design and analysis of dual-frequency ultrasound dynamic countercurrent extraction apparatus
双频超声动态逆流高效提取装置的设计与分析
3.
Dual frequency ultrasound,tissue harmonic image and CT in diagnosis of ureteral calculi
双频超声及组织谐波成像与CT扫描在输尿管结石诊断中的应用
4.
Experimental research on cavitation effects of single-frequency ultrasound and dual-frequency ultrasound
单频超声和双频复合超声的空化效应实验研究
5.
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)
6.
Linear Acoustic Analysis of Concave Sphere Dual-frequency Focused Ultrasonic Field
凹球面双频聚焦超声声场的线性声学分析
7.
The Development of a Double Frequency Ultrasonic Turbulent Device to Effective Ingredients in Medicinal Plants;
植物活性成分的超声波双频双向组合湍动提取装置的研制
8.
Investigation of Acostic Field and Lesion in Tissue in Vitro for Dual-Frequency Focused Concave Spherical Transducer
凹球面双频聚焦超声声场特性及其对组织损伤的研究
9.
Analysis on the Resonance Frequency of Sandwich Ultrasonic Transducers with Two Sets of Piezoelectric Ceramic Elements
双激励源压电陶瓷超声换能器的共振频率特性分析
10.
Fatigue behavior of welded joints under combined cycle fatigue with ultrasonic component
超声频分量双周疲劳载荷作用下焊接接头疲劳行为
11.
double superheterodyne receiver
双变频超外差接收机
12.
dual-conversion superheterodyne receiver
双变频超外差式接收机
13.
Design for Frequency-modulated Ultrasonic Generator in Ultrasonic Bonding Field
超声键合变频式超声波发生器的设计
14.
The acoustics of ultrasonic sound.
超音频声音的音响学
15.
The Research on Phase Noise of the UHF RFID System
超高频射频识别系统相位噪声的研究
16.
Noise Analysis of the Homodyne UHF RFID Receiver
超高频RFID零中频接收机噪声分析
17.
Suppression of similar frequency noise in the design of ultrasonic flow-meter with TDC
TDC超声流量计设计中的同频噪声处理
18.
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