This paper introduces the computer aided design and drafting system developed by using the microcomputer for the hoisting mechanism of cranes.

本文介绍了起重机卷扬机构计算机辅助设计系统。

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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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