首先分析光栅投影法的结构原理，得出高度拟和系数并非常量的结论。
The structural principle of grating is analyzed at first, and then a conclusion is reached that the height fit coefficients are not constant.
根据遗传算法的思想和拟静力瑞典法基于圆弧滑动面的假定，提出一种用遗传算法搜索最危险滑动面及其对应的最小安全系数的方法。
According to the quasi-static seismic stability analysis of slope, a new method based on the assumption of circular slip surface is established.
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