定义了单位阻抗功率的新概念，推导了电压幅值随其等值阻抗和单位阻抗功率变化而变化的基本方程序。
A new conception of power per unit impedance is defined and the basic equation to express the variation of load voltage magnitude with the variation of its dynamic equivalent impedance a.
文章论证了所述等效理论具有的形变功率等值性和线弹性条件下的应变能等值性。
It is proved that the equality of deformation powers and the equality of strain energy in case of linear elasticity are deduced from the present theory.
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