The new variational principles can fully characterize the initial-boundary-value problem of this dynamics.
这种新的变分原理能反映动力学初值-边值问题的全部特征。
A simple example is given to demonstrate the application of these variational principles.
通过一个简例说明了所给原理的应用。
This new principle unifies all the main existing variational principles in elasticity into one frame and brings to light a more profound relationship among them.
新原理将弹性理论中现有的各主要变分原理都统一在一个框架中，并揭示出它们之间更深一层的相互关系。
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