stepped taper tube

例句：

1. 1.The stepped taper tube is designed to reduce the overall size of the pipe.
   阶梯式缩管设计用来减少管道的整体尺寸。
2. 2.The stepped taper tube was used in the construction of the new bridge.
   阶梯式缩管被用于新桥梁的建设。
3. 3. The stepped taper tube is a common material used in the manufacturing of pipes and fittings.
   阶梯式缩管是制造管道和配件的常见材料。