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1·A new approximate expression for the argotic capacity of multiple-input multiple-output (MIMO) wireless channels is presented.

本文由MIMO无线通信信道容量的表达式，给出一种估算式。

2·By type factors and transitional momentum integral equation, the approximate expression of momentum thickness is presented as well.

借助于型参数，通过变换动量积分方程，得出动量损失厚度近似解的表达式。

3·An approximate expression of the volume of body of rotation together with its error estimation is derived on the basis of theory of numbers.

本文用数论方法推导出一个计算旋转体体积的近似公式，并给出该近似公式的误差估计。

4·The approximate expression of parasitic inductance of flat line and twisted pair line is proposed after the study of parasitic inductance in the AC bus.

通过对母线的寄生电感分析，给出了扁平线和双绞线寄生电感的近似表达式。

5·The approximate expression of various transient over-voltage have been obtained by analysis and deduction according to the simplified transmission line model.

根据简化后的集中参数线路模型，详细分析并推导了特高压系统各种操作过电压的近似表达式。

6·Based on Markov analysis, this paper presents a recursive algorithm to compute probabilities under stable states and derives the approximate expression for order-based backorders.

通过马尔可夫分析，构造了求解系统处于平稳状态概率的迭代算法，提出了计算订单的平均缺货水平的近似表达式。

7·The optimum position of a longitudinal stiffener as well as an approximate expression for computing the critical rigidity of the stiffener have been presented for design reference.

提出了合理的加劲位置以及劲条临界刚度的近似计算公式，可供设计参考使用。

8·Mathematical model of wide-band oscilloscope system is established. The analysis is based on the concept of the leading pole. An approximate expression of oscilloscope system is given.

文中首先建立宽带示波器系统的数学模型，然后应用主导极点的概念进行分析，最后给出关于示波器系统冲最的近以表达式。

9·To reversely calculate structural parameters by using second-order approximate expression of the gradient matrix and Hessian matrix for optimization function in identified optimization results.

利用优化函数的梯度阵和海森矩阵建立函数的二阶近似表达式在已确定的优化结果反向计算结构参数。

10·Thus the approximate quadratic expression of SVSR boundary can be obtained by the calculation on a given operating point close to the boundary.

由此，通过在一个临近SVSR边界的系统运行点处的运算，可以直接得到SVSR边界的近似二次解析表达式。