The concept of introducing critical repeated stress level into the Carter Model is expounded based on the critical state soil mechanics; and the Carter Model is modified.

在满足一般力学原理和临界状态土力学理论的基础上 ，本文将亚塑性理论与临界状态土力学相结合 ，推出了一个计算无粘性土静止土压力系数的理论公式 。

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Carter, looking slightly shell-shocked by now, repeated the error minutes later and watched helplessly from his chair as Ronnie made a clearance of 92.

BBC: What exactly goes on inside Ronnie O'Sullivan's head?