结果表明正交法对优化试验设计、灰色关联分析法对试验结果的分析有很重要的实用意义。
The results indicate that the orthogonal method and the grey association technique are useful in engineering experiments.
实验中采用了正交试验设计和回归分析方法。结果表明，充填尾砂中细粒级含量有可能进一步提高，增加充填尾砂的利用率，充填体性质也有所改进。
The experimental data indicated that it is possible to increase the fines content in the fill, thus utilization coefficient of tailings is raised and properties of fill will be improved.
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