电子技术：修订间差异
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* [https://www.freecadweb.org/ freeCAD] | * [https://www.freecadweb.org/ freeCAD] | ||
* [https://www.digikey.cn/zh/resources/design-tools/design-tools/ 得捷设计资源] | * [https://www.digikey.cn/zh/resources/design-tools/design-tools/ 得捷设计资源] | ||
* | * [https://www.ultralibrarian.com/ Ultra Librarian] | ||
* | * | ||
</div> | </div> | ||