A risk assessment matrix is built up through grading the hazards of regional debris flow and the social economic vulnerability.

通过将泥石流灾害的危险性和区域社会经济易损性进行分级，建立了风险评价矩阵。

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We put forward the grading standards of the probability and the loss of the risks and the risk assessment matrix.

提出风险概率等级标准、风险损失等级标准以及风险评价矩阵。

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We put forward the grading standards of the probability and the loss of the risks and the risk assessment matrix.

提出风险概率等级标准、风险损失等级标准以及风险评价矩阵。

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