The difference type direction integration is used for solving dynamic - equation, its calculationassumption causes a "calculation perturbation" effects to the system.
差分型直接积分法求解动力方程，其计算假设条件给系统增加了一个“计算扰动”效应。
2
When the deformation method was used for concrete stress calculation, it was assumed that the stress increased suddenly at each stage, and such an assumption led to certain errors.
采用变形法计算混凝土应力时，假设应力在各个时段内以突变形式增加，并对这种假设带来的误差进行了分析。
3
Calculation and comparisons show that the error caused by the assumption of concurrent temperatures of working medium and heated surfaces in boiler dynamic models is not negligible.