The primary and secondary factors influence on the efficiency of coarse machinery, which are cutting depth, cutting speed and feed, were studied by applying orthogonal experiment.
将正交试验应用到机械加工中，研究了背吃刀量、切削速度和进给量对粗车工效影响的主次顺序。
In this paper, the orthogonal design method is used to find out the primary and secondary factors that affect the bearing capacity of beam-to-column connections in steel moment frames.
本文通过在钢框架梁柱腹板连接承载力影响因素分析中引入正交设计方法，找出了主要因素和次要因素。
It evaluates and prevent the risk factors of disease resulted in by clinic environment, that is primary prevention and secondary prevention under clinic environment.
它是通过临床环境对导致疾病的危险因素进行评价和预防，即在临床环境下的一级预防和二级预防。
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