1.
The Research of Sound Waves Through-The-Earth Communication Correlation Technique Based on OFDM
基于OFDM的声波透地通信相关技术的研究
2.
Study on Antenna Equipment for Communication of Very low frequency (VLF) Electromagnetic Wave Propagation through Earth
甚低频电磁波穿透地层无线通信系统天线装置的研究
3.
ULTRASONIC TRANSMISSION INSPECTING UNDERGROUND CONTINUUM WALL CONCRETE QUALITY
超声波透射法检测地连墙混凝土质量
4.
Transmitting Boundary Conditions in Numerical Simulation of Acoustic Waves
地震声波数值模拟中的透射边界条件
5.
The welds passed the examination of radiographic test( ultrasonic inspection, magnetic testing).
这焊缝通过射线透视检查（声波探伤、力探伤）格。
6.
Study on Tropospheric Scatter Communications Mechanism in Acoustic Interference;
声波干扰下对流层散射通信机理研究
7.
Underwater Communication Beacon Signal Born and Digital Filter Based on FPGA;
基于FPGA的水声通信信标信号生成及数字滤波
8.
Application of Cross-hole Sonic in Integrity Detection of Underground Diaphragm Wall
声波透射法在地下连续墙完整性检测中的应用
9.
The Processing of Multi-channel Consecutive Ultrasonic Detecting Signal;
多通道连续超声波检测回波信号的处理
10.
Study on WDM Optical Communications Devices Based on Holographic Fresnel Lenses;
基于全息菲涅耳透镜的波分复用光通信器件
11.
Research on the Feasibility of Shortwave Communication at Sea under the Condition of Atmosphere Yawp
大气噪声条件下海上短波通信可通性研究
12.
Ultra-Wideband Wireless Communications and SAW Wideband Signal Processing Technology
超宽带无线通信与声表面波宽带信号处理技术
13.
Implement of Signal Generator With Multi-carrier in Underwater Acoustic Communication Based on DDS
基于DDS的多载波水声通信信号发生器的实现
14.
The video signal is directed to the CRT through a sound trap which eliminates the sound-carrier frequency.
视频信号通过声音陷波电路，消除声音载波频率，直达CRT。
15.
Sounds are classified into two kinds: sonic and ultrasonic.
声波分为两类，即普通声波与超声波。
16.
Wellhung: I'm taking the sopping wet blouse from you. I drop it with a plop.
我把浸透黏液的上衣接过来，扑通一声扔到地上。
17.
436 the welds passed the examination of radiographic test (ultrasonic inspection, magnetic testing).
这焊缝通过射线透视检查（超声波探伤、磁力探伤）合格。
18.
A New Technique for ECM Channel Sound optical Microwave Signal Processing
一种新型电子对抗通道声光微波信号处理技术