弧弹性是表示某商品需求曲线上两点之间的需求量的变动对于价格的变动的反应程度。弧弹性是强调弧上的变化,所以弧上的Q和P用的是变化前后的均值:弧弹性ε=(ΔQ/Q)/(ΔP/P)。
选择点弹性还是弧弹性?
文中首先寻找弹性的由来始末,以及点弹性和弧弹性的产生过程,并各自找出它们的原始文献。
First, we seek the origin of the elasticity and the invention of the point elasticity and the arc elasticity. We also search for their original paper respectively.
对汽封弹性槽计算的结果表明:将原来设计的单圆弧弹性槽改为三圆弧弹性槽,热应变及热应变集中系数均可明显下降。
Thermal strain and strain concentration factor can also be reduced significantly by changing the single curvature relieve slot into three curvature relieve slot.
应用推荐