helix [ˈhilɪks]

例句:

• This diagonal becomes a helix on a cylinder.
  来自SA
• Coil the fibre into a helix.
  将纤维卷绕成螺旋形。
  
• Normal, double - helix DNA is spiral, like a loosely coiled spring.
  正常的双螺旋DNA是螺旋形的, 像一根松松地卷曲的弹簧.
  
• The helix makes a complete turn every 3.6 residues.
  每个3.6个残基,螺旋正好转一圈.
  
• If you connect the wave crests, they form a helix.
  来自SA
• It is a helix of metal anchored in a rounded wooden handle.
  来自BBC