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The reason most electrical plug prongs have holes in them

Source Engadget 科技1d ago
Summary

If you've ever looked at the end of a plug, you've probably wondered why some have holes, and some don't - and no, it's not actually a big conspiracy theory.

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Open original
Desk
Tech
Region
Americas
Language
English
Item ID
tech-218ce980

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The reason most electrical plug prongs have holes in them · Meridian Globe