基于加权余量法，本文提出了统一处理某些单步法逐步积分格式的方法。据此，本文还提出了一种高精度逐步积分格式。

A general treatment of some integration schemes of single-step method is given by using weighted residual method and a high precision integration scheme is proposed in this paper.

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本文在原有高阶单步法研究的基础上对刚度为时间解析函数时方法的适用性进行了研究。

Based on the original research of the high order single step method, this paper makes the research on the applicability of this method for the analytic expression of stiffness.

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