Spines are common on eggs of worms, as are spots, helices, and stripes.

虫卵上通常会有突刺、斑点、螺纹和条纹。

Spines are common, as are spots, helices, and stripes.

虫卵上通常会有突刺、斑点、螺纹和条纹。

The structures of chiral quartz and copper helices are analysized.

对手征性石英和螺旋铜丝的结构进行了分析研究。

Moreover, the conformation of DNA changes and the helices are kinked.

同时DNA发生构象变化、螺旋扭结。

Alpha helices in biological materials, and design of alpha-helical structures.

在生物材料中的阿尔发螺旋，以及阿尔发螺旋结构的设计。