helical structure

• 螺旋结构

helical structure的用法和样例：

例句

1. Double helical structure of DNA and types of DNA helices.
   去氧核糖核酸的双螺旋结构与其类别。
2. The CD spectra showed that the addition of glycerol to the collagen did not damage the native triple helical structure of collagen.
   圆二色谱表明，甘油的加入没有改变胶原天然的三股螺旋结构。