在额定电源电压下，镇流器与灯配套工作时，当灯达到稳定工作状态之后，渡过灯管的电流的峰值与均方根值的比值通常CF值越小，流过灯管的电流越稳定，灯管寿命越长， CF小于等于1.7
在实验室中，研究人员可以在光线传播通过空间时，对光的波峰稍作调整来造成发送光线的速度比极限的速度限制更快的印象。
In the lab, researchers can create the impression of sending light faster than the speed limit by tweaking the speed at which the wave crests of light propagate through space.
历史上，LEI指标到达波峰和波谷的时间比经济市场的实际变化在时间上出现得早。因此，这个指标是分析学家作预测和计划的重要工具。
Historically, the LEI reaches peaks and troughs earlier than the underlying turns in the economy and therefore is an important tool for forecasting and planning by analysts.
摘要提出利用相邻波峰和波谷之间距离估计阻尼比的割线方法。
A new damping estimation method, the secant line method, was presented, that is based on the distance of neighbor peaks and valley of oscillation.
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