de-excitation time-constant

例句：

1. 1. The circuit's time constant is 0.5 seconds, which means it takes 0.5 seconds for the current to return to zero after a sudden change in voltage.
   电路的时间常数是0.5秒，这意味着电流在电压突然变化后需要0.5秒才能回到零。
2. 2. In biological systems, the time constant for relaxation of muscle contractions can vary greatly depending on factors suchas temperature and the type of muscle fiber.
   在生物系统中，肌肉收缩的松弛时间常数可以根据温度和肌肉纤维的类型等因素有很大的差异。
3. 3. In electrical engineering, understanding the time constant of a system is crucial for predicting its behavior under different conditions.
   在电气工程中，了解系统的时滞对于预测其在不同条件下的行为至关重要。