它的主体是一个四联体的螺旋形结构。
It is a quadruple spiral structure built up of identical elements.
更具延展性，粘性的蛛丝则被用于织出捕获猎物的螺旋形结构。
Stretchier, stickier silk is used to create the spiral that captures prey.
采用螺旋形结构的脉冲形成线能在形成同样脉冲宽度的前提下大大缩短形成线的长度。
It can reduce the length of the pulse forming line on the premise of forming the same output pulse width to adopt a helical structure.
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