With the random single factor group division method, the effect of feed premix made by different factories on producing performance of growing pigs are studied.

采用单因子随机分组试验方法，研究了几种不同生产厂家的添加剂预混料对育肥猪饲喂效果。

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Then reviewing other methods on fatigue life assessment, provide an acceptable estimation of acceleration factor calculation method under wide-band random vibration condition.

同时总结了其他计算随机载荷疲劳寿命的方法，说明了使用其他模型计算加速因子是可行的。

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Meanwhile, prediction model of underground deformation and predicting method of deformation for special geological factor is deduced under combined mining with random medium theory.

同时应用随机介质理论，推导出复合采动影响下地面变形的预测模型和特殊地质条件下变形的预测方法。

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