This paper sets up a strength theory of predicting failure of materials using double factor assumption "."

本文使用‘双因素假设’建立了一个预测材料破坏的强度理论。

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Conclusion Maslow's human essence demand theory and Herzberg's encouragement-health care double factor theory are of guiding importance in nursing management and should be popularized.

结论马斯洛的基本需要论和赫茨伯格的激励-保健双因素论，对提高护理管理水平具有指导意义和推广价值。

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The effect of N, P and K on protein content of rice has been studied with mathematical models. Single factor effect, double factor effect and marginal factor effect have been analysed.

利用数学模型研究了肥料N、P、K对糙米蛋白质含量的影响，分析了单因素效应、双因素效应、边际效应。

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The starting pistol was fired by TV double act Ant and Dec, and celebrity entrants included local X Factor winner Joe McElderry.

BBC: Thousands of runners complete Great North Run

The key factor behind the decline was residential construction, which stagnated in March after posting double-digit growth rates until January.

FORBES: Investors Step Back In Russia; Putin Gets Recession Wary

Diadexus drew headlines last month when it helped identify what may be a new risk factor in heart disease: a little-known protein produced by the body that can double the risk of heart attacks.

FORBES: Divining Disease