K-type section

例句：

1. 1. The engineer designed the K-type section to optimize the efficiency of the machine.
   工程师设计了K型截面，以优化机器的效率。
2. 2. The new model car features a K-type section that provides excellent handling and stability.
   新款汽车采用了K型截面，提供了出色的操控性和稳定性。
3. 3. The construction project used a K-type section to reduce weight and increase strength.
   该项目使用了K型截面来减轻重量并增加强度。