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Sealing unit for plugging system and gas measuring system, has sealing capsule fixed on outer side of tubular joint and connected with switch, where tubular joint is formed with cavity that is fixed with channel under action of pressure. 专利
申请日期: 2018-01-01, 公开日期: 2018-04-13
作者:  LIANG Z SONG W ZHAO C MA T MA K LAN
收藏  |  浏览/下载:3/0  |  提交时间:2019/12/02


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