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研究Birkhoff系统的时间积分定理.建立Birkhoff系统的时间积分等式,由此等式导出系统的类功率方程,Pfaff-Birkhoff积分变分原理以及Pfaff-Birkhoff-d′Alembert微分变分原理.
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关键词:
- Birkhoff系统 /
- 时间积分等式 /
- 类功率方程 /
- 变分原理
The purpose of this paper is to study the time-integral theorems for the Birkhoff systems. A time-integral identity of the systems is presented. The power-like equation, the Pfaff-Birkhoff integral variational principle and the Pfaff-Birkhoff-d′Alembert differential variational principle of the systems are deduced by using the time-integral identity.
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