Spiral binding: a method of binding in which a continuous wire is threaded through holes punched in the binding edge of the pages. see mechanical binding.

螺旋装：把书页在装订边打孔，用连续的金属丝作螺纹式穿过的装订方法。参阅机械式装订。

youdao

Spiral binding: a method of binding in which a continuous wire is threaded through holes punched in the binding edge of the pages. see mechanical binding.

螺旋装：把书页在装订边打孔，用连续的金属丝作螺纹式穿过的装订方法。参阅机械式装订。

youdao