在需求弹性不变的情况下，边际收益是多少？
2 (Exercise) For the case of constant elasticity of demand, what is marginal revenue?
本文运用人地关系协调分析法与经济分析法，特别是与替代弹性不变生产函数分析法C。
The paper applies combined analysis, especially the analytical methods of Constant Elasticity of Substitution Production Function and the analysis of Man-land coordinate relationship.
弹性范围，塑料范围（当材料以不变的应力流动时），应变硬化范围和发生颈缩现象以其断裂终止的范围。
The elastic range, the plastic range (during which the material flows at a constant stress), the strain-hardening range, and the range during which necking occurs, terminating in fracture.
材料试验机研究的结果表明，在一定的淀粉乳浓度范围内，凝胶强度和弹性模量随淀粉乳浓度的增加而增加，而凝胶弹性则基本保持不变。
The test result showed that the gel strength and the elastic modulus was increased while the gel elasticity was almost not changed with the increasing of the starch concentration.
将组合梁中混凝土翼缘板厚度按弹性模量之比换算，并保持宽度不变形成等效截面。
We put the concrete flange plate of the composite beam into the steel ones according to the elastic modulus ratio and keep the width of section unchanged, as a result, get a equivalent section.
如果保持发射和接受换能器之间的距离不变，那么不需要测量距离就可以应用声弹性公式。
If we hold the distance unchanged between the emitting transducer and receiving transducer, the acousto-elasticity equation can be used without measuring the distance.
假设标的股价服从不变方差弹性（CEV）模型下，推导出两值期权的定价公式。
Suppose that underlying asset follows Constant Elasticity of Variance model(CEV). We derive pricing formula of binary option.
在总厚度不变时，破坏载荷，弯曲强度及弹性模量都随金属厚度增加而增加。
Result When the whole thickness of the samples were determined, the fracture load, bending strength and elastic modulus were increasing according the increase of the metal thickness.
或者说怎样才能让弹簧的弹性势能保持原来的大小不变？
Or how to make a spring elastic potential energy to maintain the original size of the change?
能长期保持其鲜艳的色彩。正常情况下，五年不变色，十年不改弹性的使用时间。
To maintain its bright color long. Under normal circumstances, five years do not change color, ten years does not change the flexible use of time.
致密岩石弹性变形过程中的孔隙度不变性原则将给储量计算带来很大的方便。
It is believed that the principle of porosity invariance during process of tight rock elastic deformation will provide a good deal of convenience for OOIP or reserve estimation.
我们得出的一项重要结论是，美国实际出口对美国之外GDP增长率的弹性约为2，这意味着，假设其他条件不变，那么5%的国外GDP增长能够带来10%的美国出口增长。
Importantly, the estimated elasticity of real exports with respect to non-US GDP alone is about 2 - implying that, other things equal, 5% growth abroad will yield 10% growth in US exports.
但由于光纤受力后会产生光弹性效应，导致折射率变化，所以理论上光纤性能也不是恒定不变的。
However, the force will be formed fiber photoelastic effect, leading to refractive index changes, so in theory, optical fiber performance is not constant.
正常情况下，五年不变色，十年不改弹性的使用时间。
Under normal circumstances, five years do not change color, ten years does not change the flexible use of time.
根据影响函数法计算轧辊凸度对辊缝设定的影响，当保持工作辊和支承辊凸度不变，则轧制力与辊系弹性变形呈线性关系，工作辊和支承辊凸度的变化对直线的斜率几乎没有影响。
By the influence function method the influence of plate width, work roll radius, backup roll radius, work roll crown, backup roll radius and rolling force on gap setting were calculated.
根据影响函数法计算轧辊凸度对辊缝设定的影响，当保持工作辊和支承辊凸度不变，则轧制力与辊系弹性变形呈线性关系，工作辊和支承辊凸度的变化对直线的斜率几乎没有影响。
By the influence function method the influence of plate width, work roll radius, backup roll radius, work roll crown, backup roll radius and rolling force on gap setting were calculated.
应用推荐