There have some no-rational hypothetic for this mechanism, so the computational mistake is larger than the observation.

但由于极限平衡理论存在很多不合理的假定，使计算结果存在较大误差。

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Tested by experimental data from literatures, the computed system built in this paper is proved to be of good commonality, and the computational mistake is around 20%.

经文献中的实验数据考核比较，本文所编制的设计计算系统具有较好的通用性，计算值偏差在士20%左右。

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Another 7.5 million filers think they're done, but are going to hear otherwise from the IRS. This includes 3 million who will receive "math error" letters telling them they've made some computational or other mistake, and 3 million who will get "automated underreporter" notices stating they appear to have left off income reported to the IRS by a third party.

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