The practical rate of gain and loss of nitrogen, phosphorus and potassium were all in the permit range, this indicated that exploit of nitrogen, phosphorus and potassium are rather reasonable.

氮磷钾的实际盈亏率均在允许盈亏范围内，说明氮磷钾养分利用情况比较合理。

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So, when the interest rate on 90-day T-bills is below the IOR rate, for practical purposes we have an inverted yield curve.

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This has translated, in practical terms, to the idea of a sustainable growth rate.

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For most of us, the practical dollar effects of AMT are far more than the capital gain rate spread, or between 35% and 39.6% top rates on ordinary income.

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