central lubrication
【机械工程】齿轮润滑【机械工程】轴承润滑
lubrication of gearings
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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