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runner blade /ˈɹʌmp/ n

中文：转轮叶片

中文 · 转轮叶片Español · paleta de la ruedaFrançais · aube de roue
Meaning：Movable part that is fixed to the hub of the runner; it turns through the action of water power on it.
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Found in these illustrated scenes（3）

Generator set Water turbine runner Power plant cross-section

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