Compared to Internet data, the characteristics of financial data is also very prominent, such as low frequency, but higher quality.

相比互联网数据，金融数据的特点也很突出，如频率较低，但质量较高等。

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Due to the quick production frequency and limitation of essential data, the accuracy of annual data is better than monthly data which has higher request on timeliness.

由于生产频率较快，加上基础数据的限制，进度数据的准确性不如年度数据。但进度数据对于时效性的要求更高。

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This algorithm needs shorter data window time and has higher calculation precision and is not affected by deviation of power frequency.

这种算法具有所需数据窗的时间短、计算精度高和不受系统频率偏差影响的优点。

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Power companies and networking startups have spent years touting a technology called broadband-over-power lines, or BPL. In those systems, the utility sends a data signal across existing wires at a much higher frequency than electricity, so the two signals don't interfere.

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