cardinal spline

例句：

1. 1. The cardinalspline is used to connect the twohalves of a bridge.
   主星节形线用于连接桥梁的两部分。
2. 2. Thecardinal spline was designed toimprove the stability of the bridge.
   主星节形线的设计是为了提高桥梁的稳定性。
3. 3.The cardinal spline was installedin the bridge to prevent it from collapsing.
   主星节形线被安装在桥梁上以防止其坍塌。