方法：通过正交实验设计优化合成反应条件。
Methods: We selected the most optimum reaction conditions by the mean of orthogonal design.
通过正交实验设计，比较各种辅料因素对漂浮能力的影响。
The effects of different excipients on the gastric-floating ability were investigated by orthogonal experimental design and ocular observation.
对迷宫流道结构抽取了关键参数，通过正交实验设计，进行了16组短周期堵塞实验。
The key parameters of labyrinth channel unit are extracted. Through orthogonal experimental design, 16 groups of clogging experiments are performed.
通过前期试验发现乙醇和异丙醇的分离较难，所以运用正交实验设计法，确定最佳操作参数，获取优化的分离度。
Because ethanol and isopropyl alcohol is difficult to separate, the orthogonal experiment design is used to define the best operation parameter and to obtain the optimization resolution.
随后通过一个简单的例子介绍联合分析方法应用的基本步骤； 最后介绍了正交实验设计。
Subsequently , the paper introduces steps in practical application by a simple example, and introduce the orthogonal design.
从分析二次正交旋转组合设计的数学理论入手，提出通过建立关联关系的方法使二次正交旋转组合设计的实验设计和回归分析一次实现，编制了二次旋转组合实验设计孵化器。
Beginning with analyzing Quadratic rotation-orthogonal combination designs mathematics theory, the paper aim to set up the correlative relationship making the two separate steps into one.
通过实验设计出一条新的合成2-氨基- 4 -甲氨基- 6 -乙氧基均三嗪的路线，并经过正交实验确定了最佳反应条件，产品总收率为61.5%。
A new method of preparation of 2-amino-4 -methylamino-6-ethoxys-tri - azine is found. And the optimum reaction conditions are determined by orthogonal experiments. The total yield is 61.5%.
通过实验设计出一条新的合成2-氨基- 4 -甲氨基- 6 -乙氧基均三嗪的路线，并经过正交实验确定了最佳反应条件，产品总收率为61.5%。
A new method of preparation of 2-amino-4 -methylamino-6-ethoxys-tri - azine is found. And the optimum reaction conditions are determined by orthogonal experiments. The total yield is 61.5%.
应用推荐