oil ring

基本解释油环护油圈

网络释义

1)oil ring,油环护油圈2)oil control ring,护油圈;护油环3)oil retainer,油环档圈,润滑油保持环,护油圈4)oil seal leather,护油圈革5)grease retainer,护油[脂]圈6)oil control ring,护油圈

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