Using the analytic method of the anisotropic element,it is proved that the precondition is unnec-essary to the two finite element spaces- the bicubic Hermite rectangular element and the ACM element.

• 文章中应用各向异性单元分析方法，证明了正则性条件对双三次Hermite矩形元和ACM元空间是不必要的，从而得到了窄边双三次Hermite矩形元和窄边ACM元对板弯曲问题的误差估计。