cen.troid
n.(名词)See center of mass 参见 center of massThe point in a system of masses each of whose coordinates is a weighted mean of coordinates of the same dimension of points within the system, the weights being determined by the density function of the system.质心:质量系统内一点,其重量坐标是该系统内同维数上所有点坐标的平均值,重量由该系统的密度值决定