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    piston ring

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    piston ring

    Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++
    Related topics: Motor vehicles
    ˈpiston ring noun [countable]  TTCa circular metal spring used to stop gas or liquid escaping from between a piston and the tube that it moves in 活塞环
    Examples from the Corpus
    piston ring• Pardue's aircraft had metal on the oil filter screens as well as part of a piston ring.
    ˈpiston ring nounChineseSyllable
    Corpus stop spring to metal circular a used


    piston ring
    ˈpiston ring noun [countable]
    a circular metal spring used to stop gas or liquid escaping from between a piston and the tube that it moves in