And combine control mining method, surface subsidence preplan theory, mining landslide area disaster forecast and numerical simulation studied out controlling mining estimate measure.
并结合控制开采方法、煤柱稳定性分析、地表沉陷预计、采动滑坡区灾害预测理论以及数值模拟确定了控制开采的评价方法。
Based on the theory of cylindrical particle diffraction, a numerical calculation method that can be used to measure non spherical particles is presented.
以柱形颗粒的衍射理论为基础，提出了适用于非球形颗粒衍射模型的数值计算方法。
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