在这种情况下，单位产品的变动成本会随累计生产量的增加而降低。
Under this circumstance, the variable cost per unit will reduce with the increase of the accumulated output.
然而经典的生产库存模型并不考虑容量可变性，而是假定机器在单位时间内的生产量是恒定的常数。
However, the classical production inventory models do not take volume flexibility into account, machine production rate is usually assumed to be a constant.
通过研究3个玉米杂交种成熟过程中籽粒蛋白质及几种氨基酸的变化表明：玉米在腊熟后期至成熟籽粒的粗蛋白含量和单位面积生产量较高。
The results obtained from 3 hybrids of maize showed there were higher content and yield of protein in grains from the late stage or wax ripeness to maturity stage.
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