separating ring

例句：

1. 1. The separation ring is designed to keep the two parts of the machine together.
   分离环的设计是为了使机器的两个部分保持在一起。
2. 2. The new design of the separation ring has greatly improved its efficiency.
   新设计的分离环大大提高了其效率。
3. 3.The separation ring was used to prevent the two pieces of machinery from moving apart.
   分离环被用来防止两台机械部件分开。