意思是：农作物产量，作物产量；
句子实例：
This decline is soon reflected in the yield of crops.
这种下降马上反映到作物产量上。
"A sweet temper"is a figurative expression, but "sweet coffee"is not.
"甜蜜的性情"是个比喻的说法，而"甜咖啡"则不是。
Farmers can lose rather than gain if incomes fluctuate because of variations in crop yields and outputs-stable prices can then destabilize incomes.
农作物产量和产值的变化如果引致收入波动，这对农民来说就可能是有害无益，因为稳定了价格可能稳定不了收入。
This paper discusses the construction and the computation of quotient space, and the application for yield forecast.Finally, the experimental result is satisfied.
该文主要描述了商空间粒度的构建和计算并应用于农作物产量的预测，通过实验取得了很好的确定结果。
