The power function equation was used to analyse the relation between different bud lengths and water-retaining capacity of Hevea planting materials with young sprouts.

本文以幂函数方程，统计分析橡胶树萌动芽种植材料的不同芽长与持水力的关系。

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Objective: to determine the data of move inertia of the segments and to set up the mathematical model of multiple regression equation for young Chinese female bodies.

目的：测算并确定中国女性青年人体惯性参数及其数学模型，建立计算中国女性青年人体体段转动惯量的多元回归方程。

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On the other side of the equation, many young Americans are interested in, and engaged with, the world beyond their borders -- which says something about the kind of business and political leaders they'll be after graduation.

WSJ: America the Popular

In Cartagena, where one-third of residents live at or below the poverty line, it's an equation that means these young mothers have very little chance of improving their lives.

CNN: Giving teen moms the tools to change their lives

Add to the equation the rift between black and white and one cannot help feeling that politicians are avoiding young people, because they do not know how to woo them.

BBC: Young turn their back on politics