利用系数: availability ratiocoefficient of occupationcoefficient of usecoefficient of utilizationfactor of utilizationoccupation factoroutput coefficientproductivity ratioratio of utilizationservice
Investigators have mathematically projected these satellite measurements down to the top of the core using the assumption that the electric currents of the earth ' s mantle are negligible 假设地函的电流可以忽略,研究者可以利用卫星观测到的这些结果,以数学方法推算出磁场在地核顶部的分布。