摘要
仅从非完整约束方程出发来研究问题，验证了从整个系统出发来研究问题所得结论的正确性，表明两种研究问题的途径是相辅相成的．文章说明了对非完整系统强制满足关系、对完整系统自然满足这一关系的意义，文章还进一步论证了ｄ—δ要交换性．
By using two different methods,the two classical relations of non-holonomic systems are verified. This also shows that the two methods of researching analytical dynamics of non-holonomic systems are feasible.
