Using the theorems, the new equations of higher order non-holonomic mechanical systems with variable mass are obtained.
应用这些定理得到变质量高阶非完整系统的若干新型运动微分方程。
The conservation law of mechanical energy in variable mass mechanical systems with ideal bilateral holonomic constraints is studied.
研究具有双面理想完整约束的变质量力学系统的机械能守恒律。
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