激励电流的角频率对系统的响应特性有很大的影响.

The angular frequency of <em>exciting</em> <em>current</em> has a significant effect on response of the system.

该检测原理具有激励电流小、反应灵敏、电路简单等优点；

It is characterized by small impelled current, high sensitivity and simple circuit.

而闭锁型继电器，如几款779X型集成开关卡上的继电器，当继电器的激励电流被关闭或断开时，仍然会保持其最后的位置状态。

Latching relays, such as those on several Integra Model 770X cards, remain in their last position when relay drive current is removed or lost.