The process conditions were selected by using the orthogonal design.
设计正交试验优化合成二氧化钛的条件。
Using the orthogonal design, we obtained the optimum technique for producing the leaven from expanded materials.
应用正交试验求出了膨化原料制种曲的最佳工艺条件。
By using the orthogonal design method, simulating with program FLAC, the optimized layout of coal pillar is given.
通过正交设计，利用FLAC软件模拟，给出煤柱稳定性最优的方案。
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