采用复因子试验设计中的析因试验设计，为二因子有重复的试验设计。
Experiment design of factor analysis, a multiple factor design, was adopted, in which two factors were repeated in experiments.
氧传质理论因存在不确定的参数而不能用来预测河流复氧系数。
The oxygen transfer theory can't be used to predict the reaeration coefficient of the rivers due to some undetermined parameters.
中国北东部的金矿床具有多因复成特点。
The gold deposits in northeastern part of China possess the characteristics of polygenetic composite ore deposits.
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