This paper derives the integrated constitutive relation at the singular point theoretically by using Hyushin's postulate in the the strain space, and gives an example applicable to the rock cap model.

本文概述了如何利用应变空间表述的伊留辛公设在理论上导出奇异点上的完整的本构关系，并且还给出应用于岩石帽盖模型的一个例子。

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They occur in nearly any complex environment and may be acting as source rock, reservoir or cap rock.

UNESCO: EARTH SCIENCES FOR SOCIETY

Lastly, it needs to be covered with a layer of non-porous, non-cracked rock to provide a leakproof cap.

ECONOMIST: A survey of The future of energy: Dig deep | The