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一、引言采用四电极法的生物组织电阻抗测量仪,其测量放大器由电压放大器和电流放大器组成,如图1所示。为了在一定的频段内得到精确的测试数
First, the introduction of four-electrode method of bio-tissue impedance measuring instrument, the measurement amplifier by the voltage amplifier and current amplifier, as shown in Figure 1. In order to get the exact number of tests in a certain frequency band