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1·That company has a perfectly elastic demand curve.

该公司有一条完全弹性的需求曲线。

2·Gases and liquids are perfectly elastic.

气体和液体都是完全的弹性体。

3·It is demonstrated that gases are perfectly elastic.

已经证实，气体具有理想的弹性。

4·How can it be proved that gases are perfectly elastic?

如何证明气体具有理想的弹性呢？

5·It is a fact that no structural material is perfectly elastic.

事实上没有一种结构材料是十全十美的弹性体。

6·Gases and liquids are perfectly elastic, after their being compressed they return to their original volume as soon as the applied force is removed.

气体和液体是很有弹性的。在它们受压缩以后，当施加的力一移走，它们就马上恢复原来的体积。

7·The great thing about happiness is that there is no competition for it: the supply is perfectly elastic, so what floats anyone's boat is fine so long as they desist from trying to rock mine.

幸福的伟大之处在于不存在竞争，供应十分灵活，因此只要不妨碍我的幸福，别人如何得到幸福并没有什么关系。

8·Perfectly attach onto face with unique elastic and silky fiber membrane, promote skin to absorb adequate nutrition, replenish water and tender skin with obvious effect.

独特的弹滑纤维膜体，可贴合紧密面部，令每一寸肌肤都能够吸收到足够的营养精华，补水嫩肤的效验倍加较着。

9·Physics-based simulation of elastic-plastic deformation using physics theorem in the real world can perfectly reproduce the real movement and realistic deformation of virtual objects in virtual space.

基于物理的弹塑体形变模拟采用真实世界中的物理学定理可以完美重现虚拟物体在虚拟的空间中真实的运动过程及逼真的形变。

10·The basic equations with Mohr-Coulomb criterion are solved by the line field analysis method near the joint line in an elastic-perfectly plastic materials.

通过在节理线上提出合理的边界条件，得出了节理线附近的弹塑性区应力场。