The special Computer Aided Design (CAD) system is the necessary way to improve the sound quality of vehicle by promoting the design quality and efficiency of products.

专用计算机辅助设计（CAD）系统可以改善产品设计质量、提高生产效率，是提高车辆声品质的重要方法。

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Students in the program learn to use computer-aided-drafting (CAD) to design a photovoltaic system, they learn about the sorts of issues that come up when designing such a system, and they learn about the installation and maintenance of such systems.

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