连续螺旋丝
Continuous helix
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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。
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.
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