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Based on the conversion of trigonometric function ,a novel real-time algorithm of reactive power similar to that of active power is presented,which reactive power is speed-ily and accurately measured by the voltage,current and frequency.

运用三角函数变换的方法，提出了一种新颖的与计算有功功率相似的电网无功功率的离散化实时算法。

So it is available to avoid the calculation of trigonometric function during solving equations, therefore, reduce the time ofsolving and improve precision.

为此，本文提出三角函数数值等效转化的方法，使非线性方程中不含三角函数，在方程求解时，避免了三角函数的计算，因此，加快了方程的求解速度并提高了计算精度。

Based on the approximation of numbers in Q format, fixed point is used to approximate the value of trigonometric function of the rotation matrix in the algorithm.

该算法根据Q格式数对浮点数的近似，采用定点逼近旋转矩阵中的三角函数值。

This paper establishes the standard fuzzy system with partition of normal trigonometric membership function. Based on above standard fuzzy system, approximation error bounds problems are discussed by interpolation theory.

在标准模糊系统的基础上提出了以正规三角函数为基函数的一类模糊系统。

Six growth curve s used for prediction of oilfield development indexes expressed with trigonometric function are proposed,thus perfecting and abounding in the existed growth curve methods further.

提出了用三角函数表示的一类用于油田开发指标预测的增长曲线共6条，从而进一步完善和丰富了现有的增长曲线法。

Six growth curves used for prediction of oilfield development indexes expressed with trigonometric function are proposed,thus perfecting and abounding in the existed growth curve methods further.

提出了用三角函数表示的一类用于油田开发指标预测的增长曲线共6条，从而进一步完善和丰富了现有的增长曲线法。

Fundamental parameters are calculated by symmetrical and orthogonal characteristic of trigonometric function, and the iterative algorithm can calculate fundamental reactive power fast.

根据三角函数的正交性和对称性求解基波参数，采用递推算法快速计算基波无功功率。

As the cubic B-spline curves, each trigonometric polynomial curve segment was generated by four consecutive control points.

与三次B样条曲线类似。曲线的每一段由相继的4个控制顶点生成。

For equidistant knots, the trigonometric polynomial curves of first and second degrees are C^1 continuous, and those of third degree are C^3 continuous.

对于等距节点，一次和二次三角多项式曲线是C^1连续的，三次三角多项式曲线是C^3连续的。

The theoretical study shows that the continuous variability of non-operator, and operation, and or operation can be realized in mathematics, and can use a variety of forms such as mathematical index, polynomial and trigonometric. This paper introduces several and/or operations models, and the comparison by the simulation experiment shows that the model I is a more ideal model.

理论研究表明泛逻辑中泛非、泛与／或运算的连续可控性在数学上是完全可以实现的，并可以用多种数学形式如指数、多项式和三角函数等形式来实现，本文介绍的泛与／或运算的几个模型，通过仿真实验比较可以得出模型一就是一个比较理想的模型。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。