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toothed wheel /ˈtuːθt ˈwiːl/ n

中文：齿轮

中文 · 齿轮Español · rueda dentadaFrançais · roue dentée
Meaning：Wheel with teeth that mesh with the teeth of another wheel to transmit rotational movement to it.
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Found in these illustrated scenes（1）

Spur gear drive

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