更新时间：2025-01-06 19:59:48
Noun:- a lever pivoted at the center; used especially to push a valve down in an internal-combustion engine
- rocker type switch
- Rocker with bearing
- rocker bar furnace
- rocker-arm shaft
- Rocker arm assembly
- rocker-arm drive
- rocker-arm ratio
- rocker
- rocker-arm shaper
- rocker arm bracket
- rocker seat washer
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