A Pocketknife with Bearings!
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- Опубліковано 11 вер 2024
- Many modern pocketknives have blades supported by thrust bearings made of steel (or increasingly ceramics) held in place by a bearing cage. Although they might seem potentially susceptible to damage, bearing designs have proved to be remarkably tough and long lasting, provided proper care is taken.
- Наука та технологія