单变量模型是指运用单一变数，用个别财务比率或现金流量指标来预测财务危机的方法｡
文章从单变量模型、多变量模型、条件概率模型以及神经网络模型等最新模型介绍了国外对财务困境预测模型的研究；
The paper introduces the new studies on single-variable model, multi-variable model, conditioning probability model and nerve network model in foreign countries.
林龄单因变量的蓄积量生长模型决定系数低，引入地位指数和密度指数再次参数化的生长模型可显著提高模型拟合度。
Single age variable stock volume growth model had low coefficient of determination, but it was improved a lot by introducing site index and stand density index in reparameterization.
建立以磁场强度为状态变量的单悬浮电磁铁刚体模型，分析磁通反馈控制下系统的稳定性。
The rigid body model of single suspension magnet are established with flux density as state variable and the system stability is analyzed with flux feedback control.
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