actuating signal

例句：

1. 1. The actuating signalis the first step in the process ofturning on a device.
   激励信号是打开设备的第一步。
2. 2. The actuating signal is responsiblefor triggering the motor.
   激励信号负责触发电机。
3. 3. The actuating signal is usedto control the speed of the motor.
   激励信号用于控制电机的速度。