This paper reviews the technology especially its performance in high speed signal transfer,and compares it with other resistors.

Seismic geophone tailcone is improved so as to enhance the coupling between geophone and ground and then to reduce the absorption attenuation of high frequency signal in surface low-velocity layer.

Meanwhile,research on the reliability of transient-based protection under the interferer of high frequency signal was performed.

This technology is much fit for high frequency signals.

Development and distribution of high-intensity zone in lumbar disc;

Objective To explore the magnetic resonance imaging (MRI) characteristics of high-intensity zone (HIZ) and its correlation between degeneration of intervertebral disc and clinical symptoms so as to understand the MRI sign more exactly.

High-resolution seismic prospecting is one of the common geophysical prospecting methods in engineering investigation, and it is very important to excite high-frequency signals.

In view of the anti-jamming question of high-frequency protection,the paper first analyzes the high-frequency channel of high-frequency protection,the generation and intruding means of lightning waves and other traveling waves,thus discriminating different characteristics among high-frequency signals,lightning waves and other traveling waves.