The drawing of the circuit board using PROTEL software, circuit board is made of six layers.
本次绘制的电路板使用PROTEL软件，电路板分为六层。
Through the analysis of PROTEL electronic drafting software, and the misunderstandings it produced during the process of using, this essay aims to provide beginners with some experience and help.
通过对PROTEL电子制图软件的分析，结合在使用该软件的过程当中容易产生的误解，给初学者提供了一些经验和帮助。
Through the analysis of PROTEL electronic drafting software, and the misunderstandings it produced during the process of using, this essay aims to provide beginners with some experience and help.
通过对PROTEL电子制图软件的分析，结合在使用该软件的过程当中容易产生的误解，给初学者提供了一些经验和帮助。
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