求基于Biot模型的饱含流体介质的速度和衰减。(Solve the equation of Biot high-frequency and low-frequency equation based on Biot's paper(1956a,b) and calculate the seismic velocity and attenuation of the fluid-saturated medium.)

Bandpass Filters A band pass filter is an electronic circuit that allows the passage of a Frequency range of a signal and attenuates the remaining frequencies. We present three bandpass filters that added deliver the audible spectrum By the human

该文档为小功率开光电源变压器设计实例，详细介绍了开关电源中高频变压器设计的细节。(This document is an example of the design of low-power open-source transformer. Details of the design of medium and high frequency transformer in switching power supply are introduced in detail.)