olemus
masinat või mehhanismi käitav seade

Wiktionary:
noun
6. a mechanism used to power or give motion to a vehicle or other machine or machine part

näiteid
https://www.ikbooks.com/home/samplechapter?filename=32_Sample_Chapter.pdf

https://www.brainkart.com/article/Introduction-Robot-Drive-Systems_5132/

https://www.machinemfg.com/pneumatic-hydraulic-transmission/

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