centroid

详细解释:n. 质心
【机】 瞬心线

英语解释：

名词 centroid:

the center of mass of an object of uniform density

详细解释：

cen.troid

n.（名词）
See center of mass
参见 center of mass
The 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