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关,包含PLC编程、西门子，三菱PCL技术应用等1700余份比较全面. The resource collection is related to programmable logic controllers , including more than 1,700 copies including PLC programming, Siemens, and Mitsubishi PCL technology applications.
The resource is a PDF file. The compressed package is 25.4G.
Too many files to list directories one by one, the following is a screenshot of a small part of the resource: