Last Updated
：2025/11/29
sun and planet gear
（ plural ）
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A device for converting reciprocating motion to rotary motion, used in the first rotative beam engines.
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sun and planet gear
To restore the antique beam engine, the mechanic carefully repaired the sun and planet gear that translated the piston's reciprocating motion into rotation.
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To restore the antique beam engine, the mechanic carefully repaired the sun and planet gear that translated the piston's reciprocating motion into rotation.
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