“double swing door”的概念、定义、翻译、参考文献-科学参考

单词	double swing door
释义	double swing door Encyclopedia 工学门释 double swing door弹簧门一种水平开启的门，与普通平开门一样其转动轴位于门侧边，所不同的是弹簧门采用了弹簧铰链（合页）或门顶弹簧、地弹簧代替普通铰链，使得门扇可顺时针和逆时针双向旋转开启，且能自动关闭。
随便看	the United Nations Development Programme The United Nations Office of Counter-Terrorism the United Nations Sustainable Development Goals The United Nations' World Conference on Women The United Nations World Food Programme The United States Amateur Sports Act the United States-Central American free trade area the United States - China Bilateral World Trade Organization Agreement The United States of America National Park System The Unity The Universal Daily News The Universal Phonetic Symbol Set in China GF 3007—2006 The Universal Progressive Journal The Universals Archive The Universities’Alliance Across The Strait On Cultural Creative Industries Research The university of Chicago library（UCL） The University of Hong Kong Libraries The University of Manchester, UK The University of Warwick The Unknown Soldier The Unlawful Justice Squad The Unmatchable the unmber of foreign direct investment contract enterprises (projects) the unstable energy of an atmosphericlayer the upper troposphere and the lower stratosphere

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