On the ground of principle of virtual work, this paper put a new theoretical meth - od to solve question of balance by constrained equation.
本文在虚功原理的基础上，提出了一种利用约束方程求解平衡问题的新理论方法。
On the ground of principle of virtual work, this paper put a new theoretical meth - od to solve question of balance by constrained equation.
本文在虚功原理的基础上，提出了一种利用约束方程求解平衡问题的新理论方法。
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