Circuit drawing CAD is a useful tool with which electric engineers design circuit elements drawings and printed substrates.
电路制图CAD是一项专门用来帮助电气工程技术人员设计电路原理和印刷电路板图的得力工具。
There are two main kinds of CAD method to study the property of PDP cell now, the fluid model and the equivalent electric circuit model.
目前PD P放电单元工作特性的CAD研究方法主要有两类，流体力学模型法和等效电路模型法。
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