由于在估计方法中无需假定误差方差，因此，所构造的估计方法更符合实际应用情况。
Since there is no need to suppose the variance of error, the estimation method which we established is more efficient in application.
下面的讨论中假定轮齿加工没有误差，轮齿表面完全光滑，轮齿为绝对刚体。
The following discussion assumes the teeth to be perfectly formed, perfectly smooth, and absolutely rigid.
通过计算和比较表明，在锅炉动态模型中假定工质温度与金属温度同步变化所引起的误差往往是不容忽视的。
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.
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