Storage N used by shoots and leaves in spring mainly came from non-protein N in root.

春季新梢和叶片生长所用的贮藏N主要来源于根中的非蛋白态N。

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The effect of five N levels on root yield and sugar content and production of sugar was studied with one beet variety, in order to select the best N level for high yield and high sugar content.

本试验主要是研究同一甜菜品种在五种氮素水平处理下对甜菜的块根产量、含糖率、产糖量的影响，寻求获得高产高糖的最佳施用氮素水平。

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So, if we just rearrange this equation, what we find is that z effective is equal to n squared times the ionization energy, IE all over the Rydberg constant and the square root of this.

我们可以发现有效的z等于n的平凡，乘以电离能除以里德堡常数,这些所有再开方，所以等于n乘以,除以RH整体的平方根。

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So the square root of n squared r e over r h.

这里的n值是什么呢？

麻省理工公开课 - 化学原理课程节选

So, if we just rearrange this equation, what we find is that z effective is equal to n squared times the ionization energy, IE all over the Rydberg constant and the square root of this.

我们可以发现有效的z等于n的平凡，乘以电离能除以里德堡常数,这些所有再开方，所以等于n乘以,除以RH整体的平方根。

麻省理工公开课 - 化学原理课程节选

The U.S. and U.N. envoys should proactively back a root-and-branch Congolese reform process to address critical issues that undergird the conflict, from decentralization to army reform.

CNN: Congo's "Terminator" surrenders, what next for peace?