“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	water level forecasting water level gauge water level inscription in ancient China water levelling in ancient China water level observation water level staff in ancient china water level station water lifting water lifting cylinder wheel water lifting irrigation water lifting machinery in ancient China water light pollution water lily water-lily family waterline water-line section water-logged compost water logging waterlogging waterlogging control calculation waterlogging control planning waterlogging design waterlogging disaster waterlogging disaster in China Waterloo Bridge

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