精确的电磁场theta,phi和azimuth,elevation坐标系统相互转化程序，可不限次数来回转化而不损失精度，灰常强大哦。 AccurateElectromagneticfieldtransformbetween(theta,phi)and(azimuth,elevation)coordinatesystem.Youcandothetransformationwithunlimitedtimeswithoutthelossofaccuracy.