“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	three-centered curve three center hydrogen bond three center two electron bond three center-two electron bond three-channel double-balloon catheter Three-Character Classic Three-Character Operetta Three-Charater Verse on Tuina Three Chivalrous Swordsmen by Ren Yi three-choice polygon three-choice walk three-chord lemma Three Chuanqi Plays of Wan Shu Three Chuanqi Stories of the Anxianglou Edition Three Chuanqi Stories of the Sturdy Grass Hall Three Circles three circles of information architecture three-circles theorem three close Three coining offices of shanglin three collections and five unified management three-colorable three-colorable graph three-colorable knot three-colorable map

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