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Từ điển Oxford Learners Wordfinder Dictionary
gear wheel


noun
a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion
Syn:
gear, geared wheel, cogwheel
Hypernyms:
wheel
Hyponyms:
bevel gear, pinion and crown wheel, pinion and ring gear, escape wheel, pinion,
planetary gear, epicyclic gear, planet wheel, planet gear, rack and pinion, spur gear,
spur wheel, sun gear, worm gear, worm wheel
Part Meronyms:
cog, sprocket, tooth


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