The yield of tuber and colchicine content could be increased by means of promoting the growth of stem and leaves and elongating the effective photosynthetic time before the peak appeared.

高峰期前，用促进茎、叶生长和延长有效光合作用时间的方法，能在生长后期提高块茎的产量和秋水仙碱的含量。

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The stress is very complex and may reach to a peak value exceeding the yield stress of the material.

其应力分布非常复杂，而且有超过材料屈服应力的应力峰值。

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The grain yield in China has been reduced after 1998, the year when grain production reached the peak level in the history, and it turned into the lowest level in 2003.

中国粮食产量自1998年达到历史最高水平后连续下降，2003年粮食产量降至1998年后最低点。

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Most students of economics are familiar with the Laffer curve, named by Dr. Art Laffer, which demonstrates how higher taxes do not necessarily mean a higher tax yield, with there being a point (the peak of his curve) after which total revenue falls when the tax rate increases.

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The Spanish 10-year bond yield was at 5.32% Wednesday, well below its November peak in the 6.7% range and the 7% threshold which has been unsustainable for other countries in peripheral Europe.

FORBES: Citi Rings Warning Bell On Spanish Debt

Moreover, the average net yield on taxable money market funds has declined to less than 1% now from a peak of more than 6% in 2001.

FORBES: Breaking The Buck And Passing It, Too