将灰色系统理论引入到农业气象灾害的评价与预测中。
The grey system theory is introduced to the assessment and forecast of the agro-meteorological disasters.
地下水枯水期水位预报对春季农业生产具有重要意义，利用兰西县地下水水位观测资料，应用灰色系统理论的拓扑预测建立模型进行预测，取得了较好的结。
A good forecast result has been concluded with a topological prediction model of gray system theory based on the observation data of ground water table in Lanxi County.
为此，开展农业物料颗粒运动规律的系统理论的研究尤为重要。
The study of dynamic model of dust particle movement in coal face;
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