求翻译：二阶电路是指含有两个独立的动态元件的线性电路，要用线性，常系数二阶微分方程来描述。分析二阶电路的方法是建立微分方程(二阶)，并利用初始条件求解得到电路的响应。它是一阶电路的推广。二阶电路应用在我们生活中的方方面面，例如热电偶的温度计算，摩擦力的计算，电容，电感上电压的计算，交流电压，电流的计算，电机启动与停止等，简单或复杂的二阶电路在各种电路中充当不可或缺的角色。是什么意思？

Second order circuit contains two independent dynamic components of the linear circuit, use the linear, constant coefficient second order differential equations to describe. The analysis of second-order circuit is the establishment of differential equations (second order), and the initial condition

Stage 2 is a circuit that contains two separate dynamic element to the linear circuit, with a linear, constant coefficient differential equations to describe 2 bands. Stage 2 the circuit analysis method is to establish a differential equations (2 bands) with the initial conditions, and the response

Refers to the second-order circuit containing two separate dynamic components of linear circuits, linear, second order differential equations with constant coefficients to describe. Analysis methodologies are differential equations of second order circuit (second-order) and using the initial conditi