“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	relative operating characteristic relative orbit relative orbital elements relative order relative orientation relative overpopulation relative parallax relative partial dispersion relative partial molar enthalpy relative performance evaluation relative permeability relative permittivity relative photometry relative Picard functor relative Picard scheme relative plate tectonics relative pointing relative polarity of stationary liquid relative position relative positioning relative potential relative poverty relative power relative precision relative price of agricultural products

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