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spher·i·cal-co·or·di·nate system AHD[sfîr'ĭ-kəl-kō-ôrʹdn-ĭt, -āt', sfĕrʹ-] D.J.[ˌsfɪərɪkəlkəʊˈɔːdnɪt, -ˌeɪt, ˈsfer-]K.K.[ˌsfɪrɪkəlkoˈɔrdnɪt, -ˌet, ˈsfɛr-]n.Mathematics（名词）【数学】- A three-dimensional system for locating points in space by means of a radius vector and two angles measured from the center of a sphere with respect to two arbitrary, fixed, perpendicular directions.球面坐标系：一种确定空间点的位置的三维坐标系，其中点的位置由矢经与任意两个固定垂直的方向在球心处形成的两个夹角来确定
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