求翻译：本文主要通过对低通滤波器的工作原理和实现方法进行分析研究。按照不同的频率或时域特性要求，简要介绍了巴特沃斯（Butterworth）、切比雪夫（Chebyshev）、贝塞尔型（Bessel）和椭圆型（Elliptic）这四种低通滤波器的特性。并且设计了截止频率为10KHz和100KHZ的两种低通滤波器，分别用有源滤波器和无源滤波器的电路设计方法来实现。最后通过对二阶有源、无源滤波器电路的分析和设计，并用Mu ltisim10对其仿真得出设计要求的结果。是什么意思？

In this paper, through the work principle and method for analysis of the low-pass filter. In accordance with the requirements of different frequency or time domain characteristics, a brief introduction Butterworth (butterworth), Chebyshev (chebyshev), Bessel type (bessel) and elliptic (elliptic) low

This document is intended for low-pass filter through the theory and implementation methods for analysis and study. In accordance with the different frequency or Time Domain features, which outlines the Butterworth (Butterworth), Chebyshev (Chebyshev), Basel (Bessel) and elliptical (Elliptic) These

This article through a low-pass filter working principle and realization method of analysis. In accordance with the requirements of different frequency or time domain characteristics, brief introduction of Butterworth (Butterworth), snow (Chebyshev), Bessel-type (Bessel) and elliptical (Elliptic) th