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1·By using Boolean calculation to carry on the model analysis according to the present DEM data, we find that the Meilinggou mining area still has an enormous room for development.

通过利用布尔运算对现有DEM数据的地表进行建模分析认为煤岭沟矿区依然具有巨大的开发空间和价值。

2·With this algorithm, the complicated calculation procedures such as profile loop offset, self-intersection and Boolean operation are avoided.

该算法避免了轮廓环等距、自交处理和布尔运算等复杂的计算过程。

3·The minimal path sets (MPS) are achieved by Boolean algebraic simplification calculation. The authors put forward the analyzing result of the structural significance of the basic event.

采用布尔代数化简法求出系统的最小径集，给出了事故树中基本事件的结构重要度分析结果。