elliptic trammel

例句：

1. 1.The engineer used an elliptical trammel to secure the cables.
   工程师使用一个椭圆束带来固定电缆。
2. 2.The elliptical trammel was designed to prevent the rope from slipping off the pulley.
   这个椭圆形束带的设计是为了防止绳索从滑轮上滑落。
3. 3.The construction crew used the elliptical trammel to reinforce the beams during the building phase.
   建筑工人使用椭圆形束带在建设阶段加固梁。