1. 螺旋线：我也想知道螺旋线(helix)的方程 ,比如已知螺旋线的直径(15mm)和螺距 (0.8mm)螺旋角(30度)怎样将这些参数转为笛卡儿直角坐标系下的参数方程呢??谢谢了

2. 螺旋体：dystrophin基因突变时,dystrophin的C终端或与肌纤蛋白相连区受累,则致DMD;若在上述受累部位中只缩短1个螺旋体(helix),某些功能仍能保存,则致症状明显减轻的BMD.

1. 螺旋形;螺旋体
    A helix is a spiral shape or form.

    e.g. Coil the fibre into a helix.
           将纤维卷绕成螺旋形。

1. a structure consisting of something wound in a continuous series of loops

    e.g. a coil of rope

    Synonym: coilspiralvolutewhorl

2. a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle

    Synonym: spiral