step function

例句：

1. 1. Thestep function is a mathematical concept that describesthe behavior of a system as it transitions from one state to another.
   阶梯函数是一种数学概念，它描述了系统从一个状态过渡到另一个状态的行为。
2. 2. In electrical engineering, the step function is used to modelthe sudden changes in voltage or current.
   在电气工程中，阶梯函数用于模拟电压或电流的突然变化。
3. 3. The step functionis also used in signal processing to filterout noise and improve the quality of thesignal.
   在信号处理中，阶梯函数也用于滤除噪声并提高信号的质量。