The orthogonal design to optimize the best technological process was adopted and the most desirable formulation was determined based on single-factor study.

本文采用正交设计优化出最佳工艺，在处方单因素考察的基础上确定了最佳处方。

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Factor study that determine the best formula by L9 (34) orthogonal experimental design and human sensory as sucrose, milk, honey, peanut butter four kinds as raw materials.

研究以蔗糖、牛奶、蜂蜜、花生酱四种原料为4因素，以不同添加量设置3个水平，采用L9（34）正交试验设计，通过人为感观的测定，确定出最佳配方。

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According to one study, students' academic performance is not the only decisive factor of their stress responses.

根据一项研究，学生的学习成绩并不是他们压力反应的唯一决定性因素。

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Last year,a study in the medical journal Neurology found smoking to be an established risk factor in developing the disease.

VOA: special.2010.03.09

"Exposure to tobacco smoke is a risk factor for cardiac disease already in adolescents, and that's why this study supports that children and adolescents need smoke-free environments."

VOA: standard.2010.03.04

One factor that the study quantifies is human-capital endowment, meaning the brainpower created by parents, formal education and training, and on-the-job learning.

ECONOMIST: The brainpower famine begins to bite

She said the time factor might explain the study's finding of an increase in deaths among implant patients who did not meet CMS criteria.

CNN: STORY HIGHLIGHTS

Institutional affiliation is also a factor -- a study from his lab found that Berkeley students tended to like their school colors, blue and gold, more than their rival school Stanford's colors, red and white.

CNN: Is 'red' the same to all creatures?