我的一个选择是来自史密斯森国家历史博物馆的专利模型：塞缪尔·莫尔斯（Samuel Morse）1849年设计的收报机；
One of my requests was for patent models from the Smithsonian National Museum of American History: Samuel Morse's 1849 design for a telegraph register;
这种模型满足二维应力平衡条件、莫尔应变协调条件和混凝土双轴软化本构关系。
The model satisfies the two dimensional stress equilibrium, Mohr's cricular strain compatibility and softened biaxial constitutive laws of concrete.
运用有限元数值模型，对托莫尔日特地区成矿初期及主成矿期构造应力场及流体运移势进行了二维计算机模拟。
Numerical modeling of tectonic stress field and fluid seepage potential in Tomorite ore region has been studied in the paper.
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