The variable impedance may be controlled by a user to tune to the channel.
可变阻抗可以由用户控制以调谐到该频道。
Longitudinal vibration of pile with variable impedance (variable sections or modulus) in layered soil undergoing arbitrary load is theoretically investigated.
对成层土中变阻抗(变模量或变截面)桩在任意激振力作用下的纵向振动特性进行了研究。
The variable impedance scaling method for design of SCN has been improved in the Paper, the resulting is that the analogue filter can be realized by Passive SCN.
改进了目前采用的开关电容网络阻抗标度设计法，使模拟滤波器可以用无源开关电容网络完成。
This paper describes the design of a variable impedance output buffer, and its adaptive control circuit. It can automatically adjust the impedance of output buffer in real-time.
本文设计了一个阻抗可变的输出驱动器，并配套地设计了自适应的阻抗控制电路，能在电路工作中实时调节输出阻抗。
Still further, a controller may be coupled to receive a control signalcorresponding to a variable impedance level, and control a local oscillator coupled to the mixer responsive to the control signal.
更进一步，控制器可以被耦合以接收对应于可变阻抗位准的控制信号，并响应于所述控制信 号来控制耦合到混频器的本机振荡器。
CONCLUSION: The changes in brain tissue impedance before and after ischemia can be imaged and it could be used as a variable for EIT imaging.
结论：缺血前后脑组织阻抗变化率满足成像要求，可以将其作为一个成像变量。
Combined with wide band current feedback amplifier, FET input circuit and programmable circuit, variable gain amplification circuit with high speed and high input impedance is designed.
并以宽带电流反馈运算放大器为核心，辅以FET输入电路及程控电路构建了高速高输入阻抗可变增益放大电路。
Combined with wide band current feedback amplifier, FET input circuit and programmable circuit, variable gain amplification circuit with high speed and high input impedance is designed.
并以宽带电流反馈运算放大器为核心，辅以FET输入电路及程控电路构建了高速高输入阻抗可变增益放大电路。
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