返回去再一次检查布鲁克海文实验室的衰变数据，研究者们发现了一个33天的循环模式。

Going back to take another look at the decay data from the Brookhaven lab, the researchers found a recurring pattern of 33 days.

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在该实验中速度是个变数。

Speed was a variable in the experiment.

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本文系统总结了这些流变实验资料，并应用流变数据结合地震震源深度分布，对华北地壳流变性质进行了研究。

In this paper, we summarize systematically the existing experimental data, and study crustal rheology of North China by using these data combined with focal depth distributions in this region.

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