求翻译：本设计是一个低压，低功耗LC谐振放大器；为了便于测试，在放大器的输入端插入一固定衰减器。衰减器由π型电阻网络组成，实现衰减40DB即100倍的功能，其中特性阻抗为50欧姆。放大器电路是由三级放大构成，主要应用9018三极管，两级共射级放大，以及一级LC谐振放大器构成，增益在60DB，带宽在300KHZ左右，输入电阻50欧姆；当负载电阻为200欧姆，输出电压1V，波形无明显失真；此放大器使用3.6V稳压电源供电。通过增益控制电路AGC，实现自动增益。整个系统由STM32控制，通过AD所采集值对增益步进控制，液晶显示器显示所设置衰减增益倍数。是什么意思？

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This design is a low pressure, low power loss LC tuned amplifier; For ease of the test, inserts a fixed attenuator in the amplifier input end.The attentuator is composed by pi the resistance network, the realization weakens the 40DB namely 100 time of functions, in which characteristic impedance is

This design was a low-voltage, low power amplifier LC resonance; for ease of testing, at the amplifier input insert fixed attenuator. Attenuator is made up of PI-type resistor networks and achieve 40DB of attenuation is 100 times times features, of which the characteristic impedance is 50 ohms. Ampl

This design was a low-voltage, low power amplifier LC resonance; for ease of testing, at the amplifier input insert fixed attenuator. Attenuator is made up of PI-type resistor networks and achieve 40DB of attenuation is 100 times times features, of which the characteristic impedance is 50 ohms. Ampl