“umbrella vent”的概念、定义、翻译、参考文献-科学参考

单词	umbrella vent
释义	umbrella vent 伞形通风筒
随便看	hand reset hand reset relay hand reset system hand resetting hand rest hand-restoring hand-restoring indicator hand reverberatory furnace hand reversing gear hand revolution counter hand riveted hammer hand riveter hand rivet hammer hand rivet(ing) hand riveting hammer hand riveting machine hand-rodding hand roller hand-rope operation hand rotation stoper hand round pass hand rounds hand rule (右手或左手定则) hand-run tucks hand sample

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