反过来，有一个关于x和y的函数,也可以表示成极坐标r和θ
Or, the other way around, I have a function of x and y and I want to express it in terms of the polar coordinates r and theta.
把一个函数，在直角坐标和极坐标中转换。
You have a function that you want to switch between rectangular and polar coordinates.
比如说极坐标，有一个函数,是根据极坐标θ定义的。
Say, polar coordinates. Let's say that I have a function but is defined in terms of the polar coordinate variables on theta.
采用复变函数法和多极坐标方法，研究了弯曲波对含有多圆孔薄板的散射问题。
Scattering of flexural waves by multiple cutouts and dynamic stress concentration in the thin plates were investigated in terms of the complex variable function method and multi-polar coordinates.
根据体育场主看台弧形挑篷的风荷载和振型函数特点，提出并建立了极坐标下计算主看台弧形挑篷风致振动响应的方法。
Based on the characteristics of wind loads and modal shape of grandstand arc roofs of large stadiums, a polar coordinate method for wind induced dynamic response analysis is proposed in this paper.
本文采用多极坐标和复变函数方法针对半无限空间中P波在一衬砌周围的散射问题提出了一种近似求解分析方法。
The multi polar coordinate and complex function are used to put forward an approximate analysis method for scattering of steady P wave around a circular lining in half space.
提出了一种利用图像特征空间信息的核函数——层次对数极坐标匹配核，用于遥感图像建筑物目标的分类。
This paper proposes a kernel function - hierarchical log-polar matching kernel which making use of the feature spatial information for building classification in remote sensing images.
利用复变函数和多极坐标方法构造了问题的位移解。
The displacement solution is constructed by applying the methods of complex function and multi polar coordinates system.
导出了极坐标系下扇形截面杆件扭转问题的差分格式；用逐次超松驰迭代法求出了扭转应力函数差分值。
A torsion difference scheme of the bar with sectorial cross-section is developed in polar coordinate system.
应用复变函数、多极坐标方法研究弹性半空间中界面附近可移动刚性圆柱形夹杂对SH波散射与动应力集中问题。
The displacement solution is constructed by applying the symmetry of scattering of SH-wave and the method of multi-polar coordinate system.
应用复变函数、多极坐标方法研究弹性半空间中界面附近可移动刚性圆柱形夹杂对SH波散射与动应力集中问题。
The displacement solution is constructed by applying the symmetry of scattering of SH-wave and the method of multi-polar coordinate system.
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