You have a function that you want to switch between rectangular and polar coordinates.
把一个函数，在直角坐标和极坐标中转换。
A general solution to differential equation for deflection function in bending problem of orthotropic rectangular thin plate on elastic foundation is established.
建立了弹性地基上的正交异性矩形薄板弯曲挠度函数微分方程的一般解。
The radiation and coupling of linear antennas in a rectangular waveguide are discussed by means of dyadic Green's function, field transformation and reaction concept.
本文采用并矢格林函数，场量变换和反应概念讨论了矩形波导中线天线的辐射和互耦合，给出了场强和互阻抗的普遍公式。
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