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AD】Altium designer画pcb时出现Unknown Pin 和Failed to add class-CSDN博客
Altium Summer 09 Unknown PIN Errors - YouTube
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footprint - Altium Designer "Unknown Pin Error" for component - Electrical Engineering Stack Exchange
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Electronics: Altium Designer Unknown Pin (9 Solutions!!) - YouTube
Altium - How to Fix: Off Grid Warning, Missing Footprint, Unknown Pin, Clearance Violations - YouTube
Verifying Your Design Project in Altium Designer | Altium Designer 24 Technical Documentation
library - Altium Summer 09 Unknown PIN Errors - Electrical Engineering Stack Exchange
pcb design - Altium Designer Unknown Pin - Electrical Engineering Stack Exchange
