The ring binder and the post binder are examples of loose leaf binding.
例如铁环活页夹或螺柱活页夹都是活页装的一种。
Ring binding: A form of loose leaf binding in which two or more rings pass through punched holes AT the edge of the paper.
铁环装：是活页装的一种。它用两个或以上的铁环，穿过在纸边打孔的纸张。
Wire-o binding a method of loose-leaf binding in which a continuous double loop of wire runs through punched slots along the binding side of a booklet.
双线圈装用连续的双圈铁丝绕穿过打在书本订口的方孔而成的一种活页装。
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