电子工程师便携手册以及.pdg阅读器
电子工程师便携手册里面包括了电子工程师必学的常识。还有即是有的文件的后缀是.PDG格式的在这里介绍一款不必安装既可以阅读.pdg格式文件的阅读器。非常的好用。(The Electronic Engineer's Portable Handbook contains common knowledge that electronic engineers must learn. There are also files with the suffix of .PDG format. Here is a reader that can read .pdg format files without installing. Very useful.)
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