oil well cover是什么意思


中文翻译油孔盖

网络释义

1)oil well cover,油孔盖2)lubricating hole,油孔3)Crankshaft oil holes,曲轴油孔4)hole for oil measure,量油孔5)Oil-stolen orifice,盗油孔6)filled oil hole,注油孔

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