方法：以积雪草苷提取率为评价指标，采用单因素实验与正交实验设计优选出积雪草中积雪草总苷的提取条件。
Methods: the extraction technique was evaluated by single factor experiment and orthogonal design, with the extraction rate of the asiaticoside as indicator.
其次，本文用正交实验设计和单因素寻优等有关实验方法对端羟基环氧环己烷-四氢呋喃共聚醚的合成工艺进行了研究。
Secondly, with the orthogonal design method and single-factor-experiment, the technics of synthesizing Hydroxyl-terminated copolymer of CHO -thf have been studied in this paper.
以菜籽粕为原料，肽得率、氮溶解指数和氨基酸态氮为指标，通过单因素实验及中心组合实验设计探讨了枯草芽孢杆菌固态发酵生产菜籽肽的工艺条件。
With the rapeseed meals as raw material, peptide recovery ratio, soluble nitrogen and amino acid nitrogen as the indexes, the craft that rapeseed peptide was produced with Bacillus.
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