螺旋形

Their profits began to spiral down disastrously.

他们的利润开地急剧下降。

Her hair was styled into a cascade of spiral curls.

她的头发被做了瀑布般的鬈发。

Through studies on the fluorescence quenching of P3’–P6’ by Rubredoxin, the extent of quenching was found to be stronger in the polymer with more typical features of helix conformation.

10. 研究了P3’–P6’ 对铁硫蛋白Rubredoxin的荧光猝灭效应，发现构象特越典型的聚合物被猝灭的的效率越高。

In a pennaceous feather, the barbs grow helically around the tubular feather germ and fuse on one side to form the rachis.Simultaneously, new barb ridges form on the other side of the tube.

在正上，枝以绕著管状的芽生长，在管子的一侧接合在一起轴，同时在管子的另一侧新的枝脊。