With above rules, the process and intensity of roof fracture and pressurization can be evaluated and predicted effectively.
利用上述规律，可以对顶板破断的过程及其强度进行有效的评价和预测。
With above rules, the process and intensity of roof fracture and pressurization can be evaluated and predicted effectively.
利用上述规律，可以对顶板破断的过程及其强度进行有效的评价和预测。
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