Starting with Lagrange equations of the first kind, pure differential equations of multibody systems with rheonomic constraints are established.
根据变换方程与约
方程显含时间的等价性，提出
约与
统判据的等同表述。
Starting with Lagrange equations of the first kind, pure differential equations of multibody systems with rheonomic constraints are established.
根据变换方程与约方程显含时间的等价性，提出约与统判据的等同表述。
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