How Gears Work
Por um escritor misterioso
Descrição
If a device has a motor, engine or spring, it probably has gears! But what do gears do, exactly, and how do they do it?
How does a gear work? – igus Blog
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How do gears work? - Quora
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How does a gearbox (transmission) work? - tec-science
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How Gears Work
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