SA's complementary wall-building mechanism includes: the molecule has a rigid ring can resist high temperature;
而SA的高温高压辅助造壁机理包括：分子中具有刚性基团可以抗高温；
In this paper, the computation of the internal forces of rigid ring foundation under the action of vertical column load is described.
本文叙述了竖直柱荷载作用下刚性环形基础的内力计算。
In this paper, the rigid plastic finite element method is applied to analyze ring compression and the results are compared with those of the upper-bound method and experiments.
本文采用刚塑性有限元法分析圆环压缩，并与上限法分析和试验结果进行比较。
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