本文在掌握大量实际数据的基础上，给正交筛选法以注记。
In this paper, the cross sieve method was reviewed on the basic of a large number of data obtained from practice.
以均值生成函数和双评分准则为基础，建立了正交筛选预测模型，模拟预测气温和降水序列的自然变化规律。
This paper analyzes the calculation method of the rainfall forecasting, error ereates the evaluation standard function and builds up the evaluation model of the rainfall forecasting method.
结论正交设计方法有效的筛选出了三种天然药物的最佳组合方案，提高了实验效率，节约科研资源。
Conclusion Orthogonal Test Method can enhance the efficiency to screen the best combination of three medical herbs, and is of time saving and resource saving.
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