step-function signal

例句：

1. 1. The step-function signal is usedto detect the presence of a fault inthe system.
   阶跃函数信号用于检测系统中故障的存在。
2. 2. In this experiment, we useda step-function signal to simulate thebehavior of a real-world system.
   在这个实验中，我们使用阶跃函数信号来模拟现实世界系统的行为。
3. 3. The step-function signal was used to trigger an alarmwhen the temperature exceeded a certain threshold.
   阶跃函数信号被用来在温度超过某个阈值时触发警报。