directrix curve

例句：

1. 1. The shape of the curveis crucial for the stability of the structure.
   该曲线的形状对于结构的稳定性至关重要。
2. 2. Theengineer used a computer program to calculate thedirectrix curve.
   工程师使用计算机程序来计算直曲率曲线。
3. 3. Theresearcher found that thedirectrix curve had asignificant impact on the design.
   研究人员发现，直曲率曲线对设计产生了重大影响。