ring binder

n.

活页笔记簿；

复数：ring binders

Ring binder
Ring binder
Ring binder
Ring binder mechanism
FLEXIBLE RING BINDER
Ring binder mechanism with a sliding hinge plate
Ring Binder Mechanism with Polymeric Housing and Travel Bar
SOFT CLOSE RING BINDER MECHANISM WITH REINFORCED TRAVEL BAR
Recyclable ring binder apparatus with quick release ring metals
Dividing sheet for spiral notebook or ring binder
Sheet pack swivel bar support for loose leaf ring binders
Partitioned binder having a ring binder compartment and a storage compartment
Carton insert page for ring binder has side tabs linked to main body of the page by micro-perforations