negative impedance短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 负阻抗 A new principle of switched- capacitor RLC simulation, based on backward difference transformation, is presented. SC negative impedance converters and inductance simulation circuits are designed. 本文采用后差变换，提出实现模拟电阻，电感和电容特性的开关电容仿真电路的新原理。 cnki