taper shank

例句：

1. 1. The car's tailpipe is a taperedshank that extends out of the back.
   这辆车的排气管是一根缩径的，从车尾伸出。
2. 2. Theengineer measured the length of the taperedshank and calculated the necessary angle forthe joint.
   工程师测量了缩径腿的长度，并计算了接头所需的角度。
3. 3.The machine has a tapered shankthat allows it to fit into tight spaces.
   这台机器有一个缩径的腿，可以适应狭小的空间。