Circuit and device modeling play the fundamental role in the CAD of electronic circuits.
器件与电路的模型是进行CAD的基础，建模在数学上实质是函数逼近问题。
It is essential for electronic major students to master the course of Circuit Drawing CAD.
对电子类专业学生来讲，掌握电路制图CAD这一课程非常必要。
It is essential for electronic major students to master the course of Circuit Drawing CAD.
对电子类专业学生来讲，掌握电路制图CAD这一课程非常必要。
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