Last Updated
：2025/11/30
sun gear
（ plural ）
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The central gear wheel of an epicyclic gear train; the central gear in planetary gear box, which spins the planet gears
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sun gear
When the sun gear engages with the planet gears, the transmission shifts smoothly under load.
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When the sun gear engages with the planet gears, the transmission shifts smoothly under load.
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English - English
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