central lubrication
【运输】润滑支承减轻（支承减轻）【机械工程】钻孔润滑
lubrication bore relief (bore relief)
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相关词条
grease lubrication
lubrication engine, working-machine
central lubrication device
circulation lubrication system
lubrication of RAILWAY(S),RAILROAD(S) vehicles
automatic lubrication
driving band, lubrication means