公式

In order to study the negativesequence influence to regional power grid caused by autotransformer traction power supply system, formulas of NSeq current and threephase voltage imbalance were derived, based on current distribution analysis of AT traction power supply system and singlephase VVconfiguration train substation. Employing the "train diagram" method, the realtime voltageimbalance curve was obtained in a simulation study, as well as the factors that influence NSeq and some measures to restrain it.

为研究自耦变压器牵引供电系统对地区电网造成的负序影响，首先讨论了AT牵引供电系统、单相VV接线牵引变电站的电流分布，推导得出了负序电流、三相电压不平衡度的计算公式；然后结合"列车运行图法"开发了相应的仿真程序；最后通过一个实际算例，得到了实时电压不平衡度曲线，指出了负序大小的影响因素及相应措施。

We can ex-tractn roots accurately and easily to each definite equation by the means of converting, discriminat-ing and substituting the auxiliary angle and so forth into the relevant radical formula.

对每个给定方程，通过转换、判别等方式，将其转换出的辅助角等代入配套求根公式，就可求出准确而简便的n个根。

The error performance of the proposed communication scheme is analyzed and the average probability of error decision is obtained.

分析了该方案的误码性能，得到了平均误码率的估算公式，分析得到了可降低误码率的信号设计基本规则。

In this case the formula calculates the average purchase order value for each purchase order.

这实际上是在为每一个采购订单的采购订单价值作公式计算。

The ordered weighted averaging operator is extended to accommodate uncertain condition where all input arguments take the forms of trapezoidal fuzzy numbers.

研究了属性权重信息完全未知、属性值以梯形模糊数形式给出的多属性决策问题，给出了梯形模糊数决策矩阵的规范化公式。

The theory of AVO is based on the Zoeppritz equations, which are complicated for reflection and transmission coefficients.

精确的Zoeppritz方程描述了反射振幅信息量与弹性参数之间的关系，其近似公式是进行AVO反演、AVO交汇图分析、岩性预测和烃类检测的基础。

Based on the radial and axial solenoid formula, the axial and external magnetic field homogeneities of the detecting coils are analyzed in detail.

通过分析不同几何尺寸的线圈中轴线上磁场的变化情况，并借助直螺线管的径向和轴向公式，对轴外磁场均匀性进行了探讨。

At a formal level, an axiom is just a string of symbols , which has an intrinsic meaning only in the context of all derivable formulas of an axiomatic system .

在正式一级，公理只是一个字符串的符号，它的内在含义只有在所有derivable公式的公理化体系。

Therefore,an attempt was made to describe the essence,signification and the correct application conditions of measurement parameters of PAM chlorophyll fluoremeter in this paper,as well as the derivation of relative measurement formula from perspective of axiomatization.

为此，本文尝试从其本质、意义及其正确的使用条件等方面对调制叶绿素荧光仪的测量参量进行阐述，并对应用中的相关计量公式从公理化的角度进行了演释推导。

The unified formula results from the revolution and translational movement of the coordinate axis.

利用坐标轴的旋转和平移，导出了组合机床主轴箱多种传动形式下传动轴坐标计算的统一公式。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。