The mechanics calculation of parabolic space rigid frame isv ery complicated, without being dealt with in issued directories, documents and textbooks.
抛物线形空间刚架的力学计算十分复杂 ，在已有的手册、资料、教材中均未叙及。
At a rigid joint of a space frame, three resolution and three moment equations can be written.
在空间框架的一个刚性节点处，可以写出三个分力方程和三个力矩方程。
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