Notice the odd roughness of the dense histogram in the region around 7-12 degrees, with both very high frequency of some measurements and unexpectedly low frequencies of others.

注意，在稠密直方图中 7-12 度附近出现了偶然性的不平滑，有一些温度频率非常高， 也有一些频率出人意料地低。

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At ground level, such vibrations-akin to low-frequency sound waves-are very small, only about the size of the vertical motions that produce them.

在地表，这种类似于低频声波的振动非常小，只相当于造成它们的垂直振动的幅度。

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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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Extrapolating from Dr Freund's laboratory experiments, the strain in a real-life geological fault such as the San Andreas could, as it shifted, generate hundreds of thousands of amperes per cubic kilometre in a fluctuating pattern that would cause very low frequency radio waves to be emitted, thus disrupting the ionosphere.

ECONOMIST: Predicting earthquakes