Leiutised: mis on Vedru?
Storyboard Description
Leiutised: mis on Vedru?
Storyboard Text
- Slide: 1
- KEVADELVedru on mehaaniline seade, mis salvestab energiat. Vedrusid on palju erinevaid, kuid kõige tuntum vorm on spiraalvedru.
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