此文把通常进位制的概念扩张成复数进位，且由复数进位给出了一类纯粹由数学定义引出的分形。
We first extend the concept of ordinary number system, and study the complex number numeration. Then we give an example of fractal by the complex number numeration.
从桩基础的研究现状引入桶形基础的研究现状，进而引出桩-桶基础的结构概念及相关研究。
From the research actuality of pile to the bucket foundation's, then the pile-bucket foundation structure concept and the correlated research is educed.
从双口网络的Z参数、Y参数出发，推导了星形、三角形网络转换在正弦稳态电路中的转换公式，引出其应用条件。
In this paper, starting from the conversion of Z parameters and Y parameters of two-port parameters, we deduce the formulas of wye-delta network transformation in sinusoidal steady-state.
因此弯矩在形心处要引起正应力，从而引出所谓“等效轴力”的概念。
Therefore, the bending moment may cause normal stress at the axis of gravity, and the concept of "equivalent axial force" is induced.
作为扩展，文中引出了节点布局对定位影响的研究，提出了基于正六边形的蜂窝网格结构布局。
This leads to the research on the distribution of transceiver, proposed structure of the cellular layout based on the hexagonal grid.
由于曲率的影响，曲线梁在其曲率平面内弯曲时的中性轴不通过横截面的形心。因此弯矩在形心处要引起正应力，从而引出所谓“等效轴力”的概念。
When a curved beam is bending in the plane of the curvature, the neutral axis of cross section is not identical with the axis of gravity due to the influence of the initial curvature.
由于曲率的影响，曲线梁在其曲率平面内弯曲时的中性轴不通过横截面的形心。因此弯矩在形心处要引起正应力，从而引出所谓“等效轴力”的概念。
When a curved beam is bending in the plane of the curvature, the neutral axis of cross section is not identical with the axis of gravity due to the influence of the initial curvature.
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