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2013-05-23 12:21
求翻译：To prevent collapse, the framework of a truss must be rigid. Obviously, the four-bar frame ABCD in Fig. 3–7 will collapse unless a diagonal, such as AC, is added for support. The simplest framework that is rigid or stable is a triangle. Consequently, a simple truss is constructed by starting with a basic triangular ele是什么意思？ 待解决
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To prevent collapse, the framework of a truss must be rigid. Obviously, the four-bar frame ABCD in Fig. 3–7 will collapse unless a diagonal, such as AC, is added for support. The simplest framework that is rigid or stable is a triangle. Consequently, a simple truss is constructed by starting with a basic triangular ele
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