这个模型产生了两种所谓犯罪热点的类型，在数学上被归类于超临界的(不稳定的系统)和亚临界的(稳定的系统)。

The model produced two types of so-called criminal "hot spots," which are mathematically referred to as supercritical (which is an unstable system) and subcritical (which is a stable system.)

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流量的福劳德数是流动状态的影响因素，即超临界流或亚临界流。

The Froude number of flow is the factor of flow status: supercritical flow or subcritical flow.

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澳大利亚墨尔本大学的研究员詹姆斯·斯克林（James Screen）是这项研究的主要负责人，他说：“在北极海冰是否处于临界点的问题上存在着激烈的辩论。

James Screen, a researcher at the University of Melbourne, Australia, who led the study, said: "The concept of Arctic sea ice having a tipping point is still hotly debated.

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