down hump trimming signal

例句：

1. 1. Thedown-hump trimming signal is used to indicate the end of a line segment.
   下驼峰修剪信号用于指示线段的结束。
2. 2. The down-hump trimming signal is also used to adjust the positioning of objects in space.
   下驼峰修剪信号还用于调整物体在空间中的位置。
3. 3. The down-hump trimming signal is a critical component in the design of communication systems.
   下驼峰修剪信号是通信系统设计中的关键组成部分。