Spiral binding: a method of binding in which a continuous wire is threaded through holes punched in the bindingedge 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。
2
If your rear binding comes loose and starts to swivel, your rear boot will probably swivel outward, causing your rear toe to overhang past the edge of the board.
如果你的后方结合散并开始旋转，你的后方引导可能会向外旋转，使过去的电路板边缘的后面脚趾威胁。
3
Head: the edge of a page or book, parallel to and above the printed matter; also used to indicate the upper positions on any form of binding.