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    内燃机螺旋撑簧双片组合式活塞环

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    • Title:内燃机螺旋撑簧双片组合式活塞环

    • Institution:机械工程学院

    • Type of Patent:发明

    • Application Number:200410036405.7

    • Number of Inventors:1

    • Service Invention or Not:No

    • Application Date:2004-11-24

    • Release Time:2019-04-15
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