Electric power system frequency is an important indicator of power quality and is one of the most important parameters of power system operation.
电力系统频率是电能质量的重要指标之一，也是电力系统运行最重要的参数之一。
Electric ranges are inherently less friendly and harder to use because they lack that sound-they require indicator lights to tell us of their status.
因为没有声音，电炉天生就不如煤气灶友好，更难使用，它们需要指示灯告诉我们其状态。
To avoid false readings that can lead to electric shock and injury, replace the battery as soon as the low battery indicator appears.
为避免因错误读数而引起的电击或人身伤害，出现电池电量不足的显示时，应更换电池。
The effects of anti epilepsy capsule to abnormal electric discharge of epilepsy were taken from both clinical and experimental studies, which EEG was an indicator.
以脑电图为观察指标，从临床与实验两个角度研究抗痫胶囊对癫痫异常放电的影响。
Portable electric timer functions as elapsed-time indicator, interval timer and electrical apparatus on-off timer.
便携式电子计时器装有已过时间指示器，间隔计时器和电子开关计时器。
The invention also provides a detection method of the signal indicator lights of the electronic electric energy meter.
本发明还提供一种上述电子式电能表的信号指示灯的检测方法。
So an indicator light (4) is caused to energize and emit light when the power source of the electric appliance is switched on.
因此，在接通用电器具电源的同时也使指示灯(4)通电发光。
The utility model discloses an automobile cylinder electric spark indicator, which is suitable for gasoline engines with various numbers of cylinders.
本实用新型公开了一种能够显示汽车气缸电火花工作的显示仪，适用于各种缸数的汽油发动机。
The utility model discloses an automobile cylinder electric spark indicator, which is suitable for gasoline engines with various numbers of cylinders.
本实用新型公开了一种能够显示汽车气缸电火花工作的显示仪，适用于各种缸数的汽油发动机。
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