There are many helixes of dihedral Angle, and the whole skeleton forms a large helix in the structure of the rotatory isomer.
其结构中包含许多二面角螺旋，而且具有旋光性的异构体，其结构的整体骨架也构成一个大的螺旋。
Whether we really understand DNA is debatable, but Francis Crick and James D. Watson published the first of many papers describing the double helix structure on this day in 1953.
我们是否真正了解了DNA仍值得商榷，但1953年的这一天，弗朗西斯·克里克(Francis Crick)和詹姆斯·d·沃森发表了系列论文的第一篇，阐述了DNA的双螺旋结构。
Many of the databases along the double helix were shut down, closed, so that you began to function with very little data.
许多数据库是顺着双螺旋线停止运行，关闭，让你们开始运行很少的数据。
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