【摘要】 论述结构中必要联系的性质.通过对工程实际问题的分析，指出正确运用这些性质来处理一些丁程问题是十分重要的。更多还原

【Abstract】 The property of structure’s necessary linkage has been researched in this paper. Through the analysis of civil engineering problem, Pointed out that is extremely importance about applying those properties resolve engineering problems accurately.更多还原