internal failsafe timer

例句：

1. 1. The internal failsafe timer prevents the system from crashing during critical operations.
   内部安全计时器防止系统在关键操作期间崩溃。
2. 2. The engineer used an internal failsafe timer to ensure that the machine would not overheat during operation.
   工程师使用内部安全计时器来确保机器在运行过程中不会过热。
3. 3. The internal failsafe timer was triggered by a sensor, which caused the system to shut down immediately.
   内部安全计时器被传感器触发，导致系统立即关闭。