This paper gives the method of internal force calculation of Usteel supports.
介绍了U型钢可缩性支架缩动后的内力计算方法。
2
The example shows not only that the internal force caused by yielding of Usteel supports can not be neglected, but also it is of great importance in the strength calculation.
算例表明，支架缩动所产生的内力在支架的内力计算中不但是不可忽视的，而且往往占有重要的地位。
3
Gamesa's Fairless Hills wind-energy turbine manufacturing facility employs approximately 300 workers and was built at a former U. S. Steel industrial site.