earthRadius
描述
🌐 Description
地球半径，单位为米。用于将地球建模为球体的 Turf 模块。选择了平均半径，因为 Haversine 公式（turf/distance 使用）推荐使用它以减小误差。
🌐 The Earth radius in meters. Used by Turf modules that model the Earth as a sphere. The mean radius was selected because it is recommended by the Haversine formula (used by turf/distance) to reduce error.
值
🌐 Value