The phase difference often needs to be measured between two signals with the same frequency in power system, such as power voltage and power current signals.

在电力系统中常常需要对两个同频率信号(如工频电压和工频电流)之间的相位关系进行准确的测量。

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The study on shunt active power filter, which is a novel device compensating harmonics and reactive power current simultaneously, is the focus in the field of power quality control.

并联有源电力滤波器作为一种新型的谐波、无功综合补偿系统，是电能质量控制领域中的研究热点。

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Both of them provide theoretical foundation for analyzing performance of grounding grids in power current.

为分析工频电流下接地网的性能奠定了理论基础。

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On Tuesday,a federal appeals court in Washington ruled that current laws limit government power over Internet traffic.

VOA: special.2010.04.09

Current Prime Minister Sheikh Hasina returned to power this year, following democratic elections in late December.

VOA: standard.2009.03.26

Many Israeli observers believe that with the current leadership in power in Iran, Israel can make a stronger case for economic sanctions and possibly military action against Iran.

VOA: standard.2009.06.21

Harvard pathologist Mark Rubin says such a genetic fingerprint would have far more predictive power than current methods.

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Ultrasonic touchless technology uses up to 95% less power than current camera image-based gestural systems, making it an attractive option for device manufactures around the world.

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He also said the site would be almost pointless if it does not come equipped with a powerful search engine that could scour federal Web sites with much more detail and power than current search engines.

CNN: WebGov still suffers delays