在一个阶层系统中，它所包括的等级数目从理论上看是无限的。
Theoretically there is no limit to the number of levels contained in a hierarchy .
基于弹性半无限空间的幂级数法不能计算格构梁上的负弯矩区段，与数值分析的结果不符。
The negative moment of the beam can not be concluded by the method based on the half-space elastic foundation theory, but the negative moment is proved by the numerical analysis.
如果地板的广度是无限的，那么可以用一个二维傅里叶级数来表示反射光的数学分布。
If the floor were infinite in extent, the mathematical distribution of reflected light could be regarded in terms of a two-dimensional Fourier series.
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