According to the theory of grey system, this paper puts forward a dynamic predication method for evaluating system safety level of forestry enterprise.

运用灰色系统理论，提出了评价林业企业系统安全度的一种灰色宏观动态预测评价方法。

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A predication model of grey system theory was proposed for observation of building settlement. With the model, the ground settlement and its variation speed could be predicated.

应用灰色系统理论建立建筑物沉降观测的预测模型，对建筑物的沉降量及相应沉速作出预测。

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This paper is trying to apply the theory and method of fuzzy mathematics to the synthetic judgement and predication of cohesive soil liquefactions.

本文试图用模糊数学的理论和方法对粘性土的液化进行综合的评判和预测。

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